I'm not afraid of fabricating frame rails or engine mounts, but I did find an adapter kit for this exact application
http://www.kennedyenginc.com/Pages/default.aspx
a bit pricey, but it comes with everything needed to marry the engine to the VW tranny... The insurance is something to think about though, because with the radiator i would either have to run it up front (seems unfeasible, but I've done the improbable with pop cans and duct tape) or it wouldn't have a rear decklid, potentially eliminating the possibility of insuring it.
