GMC/Chevy Grill swap

[Long n' Low GMC]

Im looking for the whole exterior grill setup for my 64 GMC. Its a full ton truck and was a lil bent when i bought it, to straighten and or putty it would be to much work. Whta sort of problems would i face if i bought a Chevy grill instead of the Original GMC.
I want the Stock GMC, but im tight on money, so im gonna take what i can find. So If you can tell me what i'd have to swap out or change to make it work, please, FILL ME IN!