It will only fit in a b14 Type-R with a turbo install. You will also have to swap in new headers w/ the turbo system and upgrade the rotorary engine. You should also upgrade the pushrods. Other than that, you should be able to do it for around $50 with nothing more than a screwdriver and socket wrench.
This link will help you out...
http://www.nissanforums.com/search.php?