There's a mob in Albury (I know its a fair way out of melbourne) called Retalic motors that has put a twin turbo V8 in a TA22. Sorry I haven't got their number but if you 12456 it you should get through. I reckon they'ed be worth a talk to. It wasn't a 32 valve motor, but it was a earlier toyota V8 and it was very, very nicely done.