49 Plymouth

What motor to use? Also post pics of 49s if you got um.

Looks nice! For a bunch of answers, I'd suggest this site. The guy did a great job of documenting his restoration.

http://www.50plymouth.com/

For pictures, try Ebay and check back often, and of course, google's image search.

Oh, and if you want to swap, here's a great old article for dropping in a small block mopar.
http://shadowmtkustomz.blogspot.com/2008/03/tex-smith.html
He also documents his own swap.

If you want to drop in a chevy, don't ask me..