Most consistent cars are Camaro/Firebirds 70-82 yes for out of the box good runner. Reliable and ease of repair the metric G-body is good too. You can usually find parts even at the track if you bend something.

The S-10 also shares the metric front end, and 7.5 diff (same as metrics/Safari/Astro vans, bolt pattern different but ease of gear ratio finds). The Camaros (2nd) gen run 8.5's easily found in most 1500 pickups. Again, it's up to you what you like to run.

Camaro parts are getting hard to find, Go metric i'd say and they can be fast, Can you run truck ball joits in the enduro's?

Truck ball joints aren't illegal as long as they fit in the hole. Obviously, we cant run offset ones. But then again, any blatant blowout of the rules, is a 'nono'.

do you mean fit in the control arm hole or in the spindle hole, and these are GM parts not Chrysler

😉 Umm yes, I don't wanna give away tooo much on what I use........  ;D