Art, there's a guy out here in SoCal who put a single turbo stock-block into a 65 GS...a really clean install and an absolutely beautiful car. Idon't remember names as well as I should these days, but Neal Steward knows him. He had the car at Vegas last year, and I'd bet he'll be there again this year. Not a S2 or TT, but he might have some useful info.