Tim, thanks a lot for your input - it's much appreciated.

Steve, I'm definitely considering keeping the 3-speed for a time. I just figured since I was going to have to change a lot of parts while putting in the new engine, I might as well just upgrade the transmission as well. But you're right, maybe it's better to put off a while. I guess it will just depend on my ability to find a four-speed while everything comes together. Thanks!