They're also roots type blowers, which aren't all that efficient in comparison to any other types of superchargers. On the other hand, you've discovered the advantage this brings...cheap! One other thing you should be aware of though, is that for the Toyota SC12, you can't get new bearings for them if they're shot (as far as I know..been a while since I was looking at GZE stuff) you either get ones custom made, or machine the housing for oversized bearings. If anyone knows otherwise, please post!
WTB:
87+ AW11 ds valence panel, ds fender, rear visor. Burgundy interior parts as well.
7th gen Celica antenna assembly
Please PM me, thanks!