Thanks to JeB and TOM for turning me on to the 'wear sleeve' concept. This was a new one on me.
It took some looking through the parts catalogs at the local parts shop and, after some study, I finally decided to take a chance on one that was listed for -- believe it or not -- the 'oil pump seal' of an '00-'02 V6 Toyota engine. There was not one listed for my '88 3VZE, strangely enough.
Turns out my gamble paid off - the sleeve fit perfectly. The installation tool that came with it was too short - but, a five-inch 1 1/2" pipe nipple did the trick nicely. There is a flange that I had to 'cut-off' afterwards which was a bit of a pain but, once that was done, I had a nice smooth surface for my oil seal to ride on.
If anyone ever needs one of these for the front side of the 3VZE engine, National Redi-Sleeve No. 99157 will do the trick. It fits shafts from 1.572 to 1.578 in. diameters
I am looking forward to a leak-free engine - my driveway and I thank you for your help.
Luther