Realistically, a 2056 with a good exhaust (ala tangerine, etc) and a kit carlson efi setup would give you something in the 110-120hp range, and that's also considering the right cam and headwork. A type 1 will make HP cheap, but will last a fraction of the time. What budget have you allowed yourself? This will determine which route is best (and feasible).
Charles Navarro
LN Engineering
http://www.LNengineering.com
Aircooled Precision Performance