Discussion and technical advice the SW20 MR2. 3S-GTE, 3S-GE, 3S-FE etc
Anything and everything to do with maintenance, modifications and electrical is in here for the Mk2.
From what i understand there the same turbo .. one can be bolted and unbolted from the stock mr2 manifold .. the other is a turbo and manifold in one (not sure if it fits rev3 +).. i would pick the ct20b (and did) .
As stated they're the same turbo except the Caldina turbo is part of the manifold casting. The manifold bolt pattern is different so won't fit a previous generations AFAIK