If stand alone could pass an OBD2 readiness scan in emissions states, I would be ponying up the $$$ right now. Stand alone with a smaller turbo (or a larger turbo with modern efficiency features) would be freaking amazing. Anybody who doesn't live in a state where they plug into your diagnostic port to do emissions testing should seriously consider spending the extra money/time/tuning to go that route. I think the 1fz with the freedom to tune as you see fit could match any v8 swap.