I have a '96 Sonoma w/2.2L I-4 engine, apparently the engine was replaced and spun the #3 main bearing slightly(1/4 turn max). Upon disassembley, and inspection, found out there are several differant engine blocks and crankshafts/bearings for this engine model. It appeares that I have a '98 and up replacement block with a '96 crankshaft installed. The engine builder used '96 bearings in the '98 block and apparently ground the locating tabs off of the center bearing(#3) to make it fit in the block. Can anyone direct me to a source for accurate information about this engine or help me figure out what is needed to replace the crankshaft in this engine as it only has approx. 25,000 on a complete engine and cyl. head rebuild ? Any help will be greatly appreciated.