can i get redneck in 64 bit?

I'm not aware of any native 64-bit versions of Redneck Rampage.

People are able to get Build-engine games to run on 64-bit OSes by using emulators like DOSBox. There's some discussion about that here:

http://www.gog.com/en/forum/redneck_rampage_collection/yer_setup_config_thread/25/1

pax,
-Chris