Bought a V3 Fiberglass nismo bumper for my 03 350z and I have the bumper painted and everything but I need to install it on the car which I’ll be doing this week, and was wondering if there’s any advice & tips for it when I do the install since it’s not OEM.

AND NO IM NOT SELLING THE BUMPER, in case some people say “ nah it doesn’t fit, what color is it , I’ll buy it. “ knowing it fits

 

Since it's a replica, you should have test fit it first before paint since it will likely require some "finesse" to get it to fit properly. Too late now.

You might need some type of bracing underneath, but it's impossible to say without knowing what replica brand you bought.

Also, wrong section. Welcome to the forum.

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Anything will fit with enough time, patience, and money

 

Heat gun and patience, or let a pro do it