Ok, suppose one decides to do a build similair to Slantenstein's suggestion. Let's talk about cost effectiveness as compared to a V8 swap. I have read other threads that seem to suggest it may be "less painfu$$" to swap to V8. When I considered the fact that this would require a transmission change also, I dont see how that can be. Even if you choose a 318, any decently built motor and trans combo combined with all the nickle and dime stuff needed for the 6 to 8 conversion would run at least 4K. I'm not counting the rear end change that would probably be done in either case. Does the s/6 buildout come close to that...
Slantenstein's build is what it is...a reliable streetable car that has V-Good performance relative to the engine type. Now, if I throw a 318 in my Swinger, what I would call "V-good" performance for THAT engine would be equal to the upgrades done to the slant 6. . and that would not be all that cheap. Same goes with any V8 I put in it. I guess you can get lucky and find a V8 / trans that has already been upgraded and is in very good shape for a crazy low price, but that seems to happen to others a lot more often than me 
My /6 auto Swinger would need all the usuall stuff to do the swap and that all adds up pretty quick. Im not including the rear end and disc brake into the equation 'cause that would need to be done in either case ( for my car).
