I can't speak to the cost accurately but your statement about them being the same is accurate. When I was looking for a Challenger, I had the option of a 2 1970 cars; one was a 318 is driving shape and the other a 440 AT AC RT but in very bad shape; both the same price. Talking to a buddy he said, "when you are done, which would you rather have, a BB RT or a SB non-RT, because even though the 318 car was running, you will end up putting the same into them". He was right and thanks to him I chose the RT which I still have. I am not a big "resto" guy so that doesn't really bother me one way or another, but none of them are cheap at the end of the day. I think a lot of people lose sight of this and buy those craigslist or ebay cars for way too much money.
