Just wondering how much it would cost and how much time would be involved in changing the front part of the G35 coupe to look like the M45 (lights, grill, hood[?])? I was also curious as to what would be involved in something like that. Thanks.

 

Unless the chasis of both cars are substatially similar (and I mean substatially), I believe this is one of those "If you have to ask..." situations.