These rules have been copied for several Mopar racers and Nosh has fine tuned them over the years but mostly weighs and engine combos. Grabbed this quick so I’m not sure how current but it’s close to east cost Mopar races


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King of the Street Rules

• Open to Mopar powered door cars only
• 1/8 Mile, Heads Up, .400 Pro Tree, All Run Blind Draw, Clocks Off
• Rear Tires 29.5x10.5 non w or 315 radial (29.5″ tall tires allowed up to 10.5 for a slick and 13.5 in a dot street tire 325/50/15 allowed)​
• Over 4.900 BS N/A only - Cars must weigh 3100# and run 29.5x10.5 or Drag Radial
• Must retain stock fire wall and front frame rails in stock location, aftermarket bolt on front suspension allowed
• Any rear suspension allowed
• Wheelie bars allowed
• Backhalf (aftermarket rear frame rails) allowed
• Stock appearing interior (stock style dash, can be fiberglass)
• Any Single power adder allowed (No Nitrous and Boost)
• Billet Blocks or Heads Not Permitted
​
Weights:
• Boosted big block 3350lbs
• Boosted small block 3100lbs
• Nitrous big block 2950lbs
• Nitrous small block 2700lbs
• N/A big block 2700lbs
• N/A small block 2300lbs
• Add 100lbs for any Hemi Headed Combo
• Add 50lbs for Methanol Fuel
• (Deduct 50lbs for Leaf Springs)
• (Deduct 100lbs for 440-1 Nitrous Combinations)
• (Deduct 100lbs for the following cylinder heads - B1-BS, Indy EZ, Indy SR, Bulldog, Edelbrock, 440 Source, Mopar Performance [W7,8,9 Heads Excluded], Pro Comp or Production Casting)
• (Deduct 100 lbs for Stock Factory Iron Block for Non Hemi Applications Only)

Not enough Mopars here to run a Mopar only class....I did find these small tire rules, and they aint got any firewall rules from ADRL

SMALL TIRE - NO TIME

OVERALL CLASS DESCRIPTION


Small Tire / No-Time is a heads-up 1/8th mile class for Door Cars Only that feature no Clocks and Drivers determine who they will race by drawing Poker Chips prior to each round. Body/Shell must be OEM, no exceptions 

Any Front or Rear Suspension

Wheel-Base +/- 2” from Factory Specs

No Wheelie Bars............That's Nuts!

Stock Appearing Body Lines

No Aftermarket Composite Body (Shell Must be OEM) Composite Roofs OK

28×10.5 Slick (no w’s) or *275 Radial 

 

SMALL TIRE / NO-TIME REQUIRED DECALS


Found these rules at Street Car Take over.....No mention of firewall.

Small Tire Class

1/8th mile
-.400 Pro Tree
-Heads Up
-Names drawn first round and then pro ladder
-No times shown
-No buy backs
-275 radials/ 28×10.5 permitted (tire rules might be different for certain cities. Check event details on the event you’re racing in)

-Imports running a 4 cylinder or smaller 28×10.5W tire is permitted
-No full tube chassis (back half ok, front half ok)
-All 6 cylinder, 4 cylinder and rotary engines can have dual power adders. V8 engines are limited to ONE power adder.

-The car must retain its original appearance, profiles, and dimensions. Aftermarket fiberglass and/or carbon fiber replacement panels are allowed. All body panels must be factory style. Aftermarket wings and spoilers are permitted. Forward facing hood scoops/turbo or supercharger inlets are permitted. No complete carbon fiber or fiber glass aftermarket bodies.

-$3,500 Guaranteed payout 80/20 split with winner and runner up.

-$100 entry plus tech card at the gate to enter. This will be different if you pre-register online. Each event might be a little different but we try to keep it all the same.

Would be cool to see a KOS race today to see what shows up and what would win, and agree, leave the rules loose. That duster clearly is a street style car

I watch some of the old KOS races on youtube, and my Duster would be smack in the middle of the pack with a 9.42...Things have got a lot faster since then....Just like Drag Week cars....I have seen some damn fast street legal cars at our track, and wow, some of them really run.

Then there are cars like this out there now!!!!
https://www.youtube.com/watch?v=mN-Inprk3bw&t=15s

I saw the old Chapman Superbee for sale on FB the other day. It was a player at one time, not sure how much it's been updated.

You guys really don’t know there are still KOS races ? ?
There a bunch of KOS races and cars out there

That car has been for sale on Moparts Race Car section for many months……

It has 4link in it now.

Did this green Duster used to be painted white?

yes

Nice build!

We do have a Buffalo Street Outlaws thing, never went to the track when they ran,,,,,