In Japan, earlier GTS (May 89-Feb 93) came with 155ps 2.0L (RB20DE) and GTS-T had 215ps RB20DET. There are model called GTS25 (RB25DE *non turbo 180ps) came out in Feb 93.
There are no R32s came with RB25DET. The first RB25DET came with R33 model.
Some low end R32 GXi even came with SOHC 4 cyl engine (CA18i 91ps
). and GTE also came with 125ps SOHC RB20E engine.