Ravram
You can get them at NAPA in the help section. They come 2 per pack so you need two packs. They are called wiper linkage bushings and the NAPA part # is 665-1537. I replaced all 4 for $5.00. A lot less work than what you are contemplating and probably cheaper also. Charlie is correct that removing the whole linkage is easiest and a little grease helps them go together. I used my vise and a socket, for better control than a hammer, to press it all back together. Here is to another 20 years of problem free operation.

Hmmmm... the wipers in my 90 D150 aren't working, and I was going to AutoZone for a rebuilt motor as well... What was the problem with your original wiper motor? Just curious to see if I can save some bucks...

on mine the driver side wiper worked and the pass side did not.the plastic clip thing was bad

The main problem I have had with the wiper motors is they lose their internal ground.
Just ran a 10 gauge wire from the moter to the fire wall.
Been working for several years now.

Thanks Charlie... I'll give that a try.

I had to put the ground wire on one of the little nuts on the end of the motor.

Yeah... I was thinking of doing that on one end, and running the other to the negative batt terminal...

You guys may have just saved me about $120. YEah, that's what a new motor is running these days from Advanced Auto in Florida.

I'm going to go check those bushings and the grounding.

There was a very audible "pop" and the wipers just stopped. They didn't even fall back into place, though they did both move down when I manually lowered them by hand. The noise did sound like it might have been a ground disconnect (my battery terminal did the same thing until I fixed it)

Ya know I'm thinkin that if the wipers move by hand, like on my truck, it's probabley a bad/broken motor... If you try to move the wipers on another vehicle, you'll notice they won't budge...

If they move easy the linkage probably has come apart due to the bushings.