Stupid oil pump has been going for the past few months on my 93 Pontiac Sunbird with the 2.0L OHC. Finally gotten a good little tick at startup so figure its about time to change it. Its the kind of oil pump that fits over the crank snout and is driven off of that.

Does anyone have any experience with changing one of these things? ANything to look out for? It looks to be a long PITA job because of the design.

Nick