I am running a stock K frame from a 5 th ave with stock t- bars in my 56 Plymouth ...I have am iron head 493 stroked 440 and have run it for 4 years now..I like everything about it...rides well on long trips . (When I change to the 2: 76 rear ).and runs well at 11.6 @ 115 mph .with 3:55 gear.the whole car weighs 3700 lbs.The only problem I had was the headers and the P/S box want to occupy the same space..but with a little heat and bending ,it works