i'm interested in doing this in the near future, and was wondering what was all required (couldnt find it when i searched lol). id imagine itd just be a direct bolt on (hood, fenders, headlights, bumper, grill) but would you need anything else?

 

You would need the radiator support/headlights also.
The fenders you would have to do a some cutting and welding as if
you were doing a silvia S15 conversion on a 240sx.

Someone on G35nyc put up their process on doing a coupe front conversion.

 

I came up with this idea awhile back, but never got around to doing it. I purchased a set of coupe fenders. the coupe fenders are longer than the sedan fenders, but the bolt holes are all in the same spot!
so, you need to marry the coupe and sedan fenders together via vutting and welding! that is the hardest part.

after that, it should be pretty much all bolt on.
the front radiator support is the same part number from nissan, so that shouldn't need to be changed.

you will need:
1) a pair of coupe fenders
2) coupe fender liners
3) pair of coupe headlights
4) coupe hood
5) coupe front bumper
6) coupe grille

that should be all.

you may want to check on www.g35driver.com for more info. there is a thread on the conversion in the 2003-2006 Sedan section.

 

Search for DieselX's thread on G35Driver, he did the conversion. Like QuadCam said the fenders need to be modified to fit.