Sam a site to go to for swap z cars is HybridZ.com there you will find most engine swaps and a lot of information. Also you either have to be good at body work or find a clean shell. There getting harder to find now. 240z 72and up is the year yo get.
EDIT: here is the link http://forums.hybridz.org/index.php
since you are primeing why dont you take the handles off and the locks out. Wouldnt take much work and it would look even better in the end. Plus it would prevent any mistakes like not sanding properly and having the paint flake in that area. Just a thought.