Personally I like the MAFT Pro, especially for 1/2 N/A-T builds. The built in timing control is a much better option than just throwing GTE electronics in the car given that the two engines still have different compression ratios. I just think it's a good idea to tune the timing advance to suit your engine, not just rely on the GTE's less aggressive timing curve.
BTW, the MAFT Pro has Boost Control functionality.
Aside from collecting the assorted essentials (oil cooler, IC, turbo, feed and drain lines, DP and manifold) making a return for the oil from the turbo seems to be the biggest hangup people hit. They usually make one of a few common mistakes: trying to use the port below the oil filter as a return (I know a few people tried it and most had nothing but problems with it), welding a bung on the oil pan that's either too small or too low on the pan causing a restriction in the flow, or trying to run the return to the return line on an oil filter relocation hub (a bad choice for a number of reasons, mainly the mounting height and back pressure).
