1957 Buick Special: Anyone have any idea how much it should cost for a top end rebuild and/or a full rebuild. I got a quote of $3000 for a full rebuild today. Not sure how many die hard are out there that want completely original parts. I have toyed with the idea of dropping a fuel injected LS into it with an updated transmission. I know the purists hate this but how much more dependable will new technology be? Also, How do these transmissions rate?