sb vs BB

When I bought my Duster it was complete with a good running 340 in it. I had a 500 hp 440 and my intention was to swap in the bb. After much pondering, measuring, and research I decided to sell the 440 and build the 340. Mostly because many people were telling me I couldn't run 10's with the sb so I had to do it then. This was back in the early 90's though when there wasn't really a lot available for them.