I have headers on mine BD with the 350 I put a camaro colum in it the camaro one is a little longer so you can move it in a little I also moved it towards the passenger side a little and put a universal swivel on it. I used to have stock arms but when I laid it out the arms hit the headers the tubular don't.it was the hardest part of the build.I f you have any questions email me at 
fullsizes10@yahoo.com 
later chris