Hey everybody, currently working on a original 90k truck 2wd trying to install factory power steering and air for a guy, trying to figure out which power steering pulley I'm supposed to have.

Are all the old style pumps the same dimensions with different pullies or are some longer?

What is the dimension of the spacers for the brackets?

Which pullies am I supposed to have?
Is there a different balancer.

Currently have the two groove WP and ALT and the three groove two piece crank pulley

Any photos of factory setups under the hood would be fantastic!

 

You'll probably get a more accurate response in the right forum, this is the 73-79.
But a partial answer is all of the Thompson pumps are the same length, there are various pulleys and brackets though.
BTW, welcome to FTE, lots of good, knowledgeable people here.

 

Well damn, that's what I get for rushing into answer haha! Thank you though! Maybe a Moderator can move this thread for me?