AFE's Twisted Steel headers on a VQ37 car

Dentt42

I've spoken with AFE, and their stance is that they're willing to let me test the parts as a guinea pig and return them if it doesn't work. Basically their exhaust tech says that my idea is feasible, but can only confirm with a real test fit to a car. Layout would be:

[VQ37 Engine]--> [03-06 VQ35 350Z AFE Header]-->[03-06 VQ35 350Z AFE Cat pipe]-->[G37 Coupe AFE Cat-back]

Can any of you think of something that I could be missing before trying it for real? My main concerns are clearance to the steering coupler, and mating the 350Z cat pipe to the G37/370Z cat-back.