The XSPower manifolds have been revised and are rather decent now. The wastegates have no problems. Get the Tial 38MM style. Also the XSPower intercoolers have beeen pushed well over 800hp by many supra guys. They love cheap stuff because they got tired of paying greddy $1800 for a 4 row intercooler with piping now they buy universal intercooler piping nadi ntercoolers for a little over $350. With some cutting and a little welding you can have a hell of a setup. I am pushing a little over 300 RWHP in my SC with an XSPower kit. I have a little over 4gs in my car with the replacement motor, head work, headstuds, maintenance, clutch, exhaust, and piggy back ecu with turning. Now thats worth it. I would love to be able to afford the real expensive shit. But why not have cheap horsepower when it works.

My recommendation is pick up some RX7 injectors from an FD the primaries are 550cc and have been known to flow to 605cc. They are top feed high impedance and require no resistor pack. I can't remember if the KA is high or low impedance if it is low impedance pick up some 89 Turbo II primaries or secondary. iF they are side feed pick up some supra 550cc injectors they are low impedance. Alot ofthe denso parts will fit each other and the Sti Pinks are 550cc top feed high impedance injectors. THose might be a good choice.

Good luck.