· Still moderating..sorta
OK here's the deal, your car has the GA16i engine. This engine was available in 89-90 Sentras. The GA16DE engine was used from 91-99. You CANNOT use the block from a GA16DE, and swapping in the whole engine is not worth the trouble. You are just going to have to find another GA16i engine from a 89-90 Sentra. The other thing you can do is swap in a CA18DE(T) or SR20DE(T), but neither are bolt in, and will cost ALOT more.