Re: 35c questions, and ProComp tires??
On axles, you can use '90 and up. Before '90 they were non c-clip. I have a '90 axle sitting on my garage floor right now, dana 35C, 3.07, open diff. I can send you pictures if your interested. The axleshafts are completely straight with all the splines in good shape. Best yet, I am within a 2.5 hour drive, Lompoc, CA. Make me an offer.
Let me know,
'90YJ, Gearless Locked Front, Slippery Rear Axle, Ramsey REP 8000, 33x12.5 Mud Kings