I say DO NOT SWAP! you already got a sweet engine
if youve got $5K you could very easily put in a good turbo (Apex ball bearing *drool*) and upgrade the internals of the engine - new pistons (low compression for boost), rods, head gasket new fuel pump rail, filter, and injectors. The fuel system would be key to getting max boost from the turbo so you dont run lean on fuel; pistons and head gasket just in case youre running on high miles.
This setup will run you around or just over the 5K so pace yourself and upgrade internal first, then turbo and run lower boost, and finally upgrade the fuel and inturn run bigger boost and go faster
you've got some big cash to spend...awhole lot...youre talkin like its chump change...just be sure to buy quality parts
(oh and if you turbo...for gods sake get a turbo timer and BOV!)