Jim, I toasted the km148 in my 87 by cracking the oil pump, trying to sock the bellhousing up to the engine without getting that third sock in to the pump with the converter. I whacky wrenched the lower bolts thinking it was just the locator holey dowels that were hanging up. This cracked the pump rotor. It finally jiggled into place and socked up. O/d lasted about 500 miles, as the pump was making insufficient pressure with a crack in the rotor. Then it broke the rotor, ingested rotor chunks into the hydraulic system, and died. I paid to get it rebuilt, and it was only after that rebuild failed that they told me "We found all the rotor but one piece.", which was still in the valve body, restricting apply pressure which fried the rebuild. I did the last rebuild myself at a leased bench in a tranny shop.

ATP has replacement parts of pretty good quality pretty cheap, and a pretty good book on the generic aw372 aisin tranny, aka the km148. The pump is pretty easy to swap, and you get the new front seal out of it. Do the rear at the same time, and it's usually useful to do the rear tcase seal at the same time.