Hey Matt, and welcome. I think the 250/292 engines will satisfy you the most for turbo applications. There have been members on here that have had good success using either of them. The very first problem you will have, is after a few months of driving your ride around town, you will start to want more and more power. Soon 6-10 lbs. of boost becomes 12-14 or more. So don't limit yourself, and pick parts for your build-up that will allow you to "grow" later on.
