An $8,000 Question

[NO_H2O]

Vanagon egine converted to aircooled (type 5) = lots of machine work and will more than likely cost far more than a type 4 in the end. Jake started one and gave up on it some time later.
Corair 6 - Perfomance parts are fewer and farther between. Any emgine that turns backwards and has an odd number of cam lobes it too freaky for me. Fitting it and trans adapting may be a problem too.
A 2056 type 4 can net you 130 hp and last far longer and have a wider/flater torque curve than a 2110 type 1. A 2270 would push 170+ hp at an extra $ for headwork, etc.
Just my 2 cents.