first off, are you getting rid of the cutout? pm me
you could definitely have that pipe made. slp includes hangers too but its not a crazy pipe, they just make a smooth bend. i am almost positive the SLP tailpipes are 2 1/2", i could be mistaking. alls i know is my gmmg's fit perfectly, so that size! they do make adapter pipes that step up or down in sizes if you need to go that route.