with the hedman headers does the y-pipe that comes with them go in back of the A frame or in front? if it goes in back i'm going to have to get a new oil pan if i get the hedmans.

 

that's what I have... they should fit with out changing other stuff.. Mine did.. it took a while to fit it all together though... (that includes the cat-back) I did have to move some stuff but I left everything the same... Make sure you use a heat shield on the starter.. you WILL burn it if you don't