Yeh, I changed out my GC8 manifold for a MY02 manifold. It wasn't STI so had the TGV's, but they're as easy as grinding out the separators after removing the butterflies and plugging up the sensor hole. The coil on plug conversion is a breeze, but along with the altered wiring loom for the new manifold, it takes a small amount of understanding of wiring. Start to finish I think it took me a few afternoons sitting at the workbench with the wiring diagram Tuna had. It was for Motec, but I modified it to suit my ViPec based on the pinouts for that particular
ECU.
I think I put a small DIY in one of my threads on it.