Will V6 bumpers fit a GT without hassle?

Are you doing this because of side exhaust? If so, you might want to consider that the V6 bumper stops noticeably higher than the GT bumper. It really looks funny with the stock GT side skirts, but if you have aftermarket skirts, you really don't want to do it.
 
Not really side exhaust yet. Kooks headers running through Magnaflow cats then dumping out. I was going to just paint my side skirts like the v6's or see if I could just trade those too. I'm just trying to look like a nice v6. No bling or crazy accessories just mustang.

Anybody with a torch red v6 that wants to look like a v8 lemme know I'll swap/sell it all!