225 Rebuild from scratch

If you really intend to add a turbo later, then the build of the bottom end is important. Use of the right pistons (I'd avoid the stock cast ones) is the most critical item, but it all depends on how much boost you will be adding as to what else to do to rods, crank, etc. If you stick with 7-8 psi of boost max then it is not too big a deal; if you go much beyond that, then things are going to have to be strengthened up.