posted this question in the second generation part of the forum but thought i might get more responses here. have a 88 second generation 2wd manual shift d50 with a perfect body and a high mileage sick engine. low mileage jap engines are no longer available. This has been asked before i'm sure but i can't put my hands on what engines will fit directly and one that will fit with some massaging. my engine still runs but poorly. can someone help?