A girdle would be a must. If I could make one fit in my TTA without an aftermarket K memeber...I'd be all over another one. The new owner of my previous car popped holes in 4 of 6 pistions and the bottom end held together with the girdle in there...says something about what it does to strengthen that bottom end up! You would be surprised how strong that OE bottom end is if it's girdled...RJC has proven that already as well as most of the other "fast" TSM cars. As for the FAST system, the "KISS" approach will get you there without the cost. Don't get me wrong, if you opt for the SFI with WB and individual cylinder you'll have a pretty slick set up, but the cost to do it is more than you might want to pay. A buddy of mine Eric Marshall ended up disconnecting his FAST system and going back to the OE computer and has gone just as fast with propper tuning....can be done! If money is not problem, go for it, you'll have a lot of things you can tweak with the FAST...sometimes more than you want. Your on the right path to build a bad ass motor, but do you really need all that must be asked???