Chassis headers vs Fenderwell headers

Well I was hopping to use these chassis headers instead of the fenderwells on the car now, am going back to the street from ages of bracket racing and figured if I just welded some collector/muffler flanges on the chassis headers they would work out better for me but noooooooooo, they fit about 1/2 inch away from the shifter cable so that just wont work. Back to the fenderwells, pfffffft.