Yep the M35a2 harness should work just fine. Some circuits may be a little long and some might be short, but it's not hard to make it work. I helped a buddy use one on a gutted M37 he rebuilt. The key was downloading all the wiring diagrams from the manuals for both and comparing the circuit numbers to see where they go. Because the military tags each circuit with a metal tag with numbers it makes it super easy to figure out were each one goes.