The staight out the back pipes I have always consider a chevy thing. When I bought my tailpipes I bought the full "camaro", out the back, pipes because I thought I was going to have to section and weld them back and I thought I might need the extra material but I was able to insatll and just cut off the extra at the last bend and the horizontal portion is somewhere in the garage. Besides I think they only offered the "pontiac" version in 2" and the others came in 2.5". That was a deal breaker for me.