Post 11 second small block combos

I know this is an old post but I do see a Feb 14' 1/4 mile time posted. I wanted to ask you how you got those 10x29 Hoosiers on your car. Spring location? Mini tub? flattened the inner wheel well? I need more tire at the track for traction. My car drives excellent on the street and I like the stance as it is. Don't want to mess that up to get the tires to hook at the track. Currently running 235/60/15 MT et streets. They are barely clearing the wheel well because the only aluminum wheel backspacing I could find was 3.75" for the LBP. Have ralleys with more back spacing (just short of 5")and I can barely fit 255-60-15 MT et streets on it with some rubbing on the street. The 255s are 10.1 section width. That seems to be the max without mods. Even the 29x9 Hoosiers lists an 11.4" section width. Any info/suggestions would be appreciated. David

On my Demon I put a 28/10.5W on it by moving the leaf springs with the spring relocation kit. It moved the leaf springs in 3 in. and I bought wheels with 4 7/8 back spacing with stock width rear housing.