Finally! For other owner's reference.....
Neaco is an aftermarket supplier of u-joints. With a cross-reference from OEM part#'s to the Neaco line, I found the following:
Front UJoint: Neaco part#: 2-0317 Advanced Auto Parts ($34) --- OEM Part# 8-97167-317-0
Rear U-Joint: Neaco part#: 2-0383 Advanced Auto Parts ($14) --- OEM Part# 8-97216-133-0
CarQuest has the same part numbers as Neaco on their box.
Advanced Auto also had the Neaco numbers on their boxes.
Parts are installed and verified.
(As mentioned in prior threads, EVERY SINGLE AFTERMARKET parts company I called showed the same u-joint for front and rear. I even checked Trooper's designation -- same deal. AAP and CarQuest said they would send a parts correction request to their IQ HQ. I wouldn't count on the world being fixed thru my effort. Still you have this thread as an assist to find in-town parts. Once I figured this all out (after 4hrs), I found both front and rear u-joints in stock at AAP!) Tomorrow I'll get to see if this solves my hwy vibration. Hoping it does because the front u-joint was nearly seazed-up.
Hope this helps someone along the way!