well -- I've pinpointed my oil leak to the rear seal (worst possibility of course) and I think I may need some help. Info -- 87 silverado blazer. 305 TBI, 400 tranny (i think .. I'll check), np 208, 32" tires, no lift. Haynes says that starting in 87 they used a one piece rear seal and that in order to change it you have to unhook the tranny and partially lift the engine. is this correct? anyone have any experience w/ this? Is it particularly hard to do yourself (I have access to a good shop, but limited intelligent help as I'm stationed in Missississississississpipiipppi)? How much should expect to pay if I drop it off at a shop? I'm only leaking about a pint every 200 Miles ... but it's enough to mark up the driveway and coat the underside (no rust tho!) ... not a huge problem but I'm kinda anal. I also hate wasting time, and If I'm going to halfway pull the engine to do the rear seal, I might as well all-the-way pull the engine, rebuild and bore it, rebuild the tranny, etc. while im at it (low funds tho).. Any help would be appreciated.