Any idea what this is for or if it's even stock? It's on the driver's side frame right in front of the firewall (firewall is out)

3 speed / 4 speed z- bar mount.

That's what I thought it may be. Do the welds look factory or like it was added ?

3 speed / 4 speed z- bar mount.

Ding Ding Ding......we have a winner!

Tell them what they won Bob......

Could also be for the column shift or floor shift z bar..

I think the floor shift bracket is bolted on

It looks like most of your factory welds in the area around it are long gone, so would it matter?

This was originally a 318 car. No idea about the trans. I'll be using 400 with auto and aftermarket shifter so I won't need the bracket. I was just debating on whether or not to cut it out but I may just leave it.

Is there a difference in a manual and auto trans tunnel hump.

Yes.

On the factory 4 speed cars yes, on the economy factory three speed stick cars no

an e-body floor looks like this

column shift automatic = no changes
floor shift automatic with console (ALL of them) adds a shifter, a couple console brackets & a hole for the linkage to pass thru

manual transmission requires a large hole cut in the floor covered by a HUMP (shown below) w/console adds a couple brackets

all manual transmission (3 & 4-speed) e-bodies are floor mounted & use the same HUMP

HUH? Factory welds long gone? Really? They look good to me. Consistent with the 20 or so 4 speed ebodies I've "ACTUALLY" put my hands on over the years.

Firewall gone, inner fender gone, so yes, some of the factory welds in the area are gone.

Original factory floor, "G" code 318 3 spd floor shift 1970 Deputy Challenger.....

jess

This is what's in my car. There's no telling what all this car has been through

He was only asking about the bracket, yes, those are crappy factory welds. Pretty easy to tell "if" you've actually worked on a car.