Thanks for the input guys. I've already gotten the old bolts (most of them anyway) drilled out and replaced then with grade8 hardware, but (and a large one at that), not all of the old bolts came out, since the drill bit wandered off center and ended up off to the side. As a result, the bolts I put in to replace them are sitting at quite an angle because of the tip of the old bolts not wanting to come out. I banged on them with a hammer and prybar trying to break the tips off/out of the old nut, but they would not budge. I dont see any way to get in there and fix it properly without lifting the body off the frame or drilling large holes in the rear of the tub, neither of which is high on my list of things I want to do anytime soon.

The replacement bolts had gotten pretty noisy in the last week or so, so I pulled them out and added several more washers to each bolt. They seem to be holding so far. Just for good measure I made sure to torque one of those bolts in half in the process. Good thing I bought a couple extra.

Sunder, do you have a recommendation for measuring the shocks? I have the old ones I can use to measure full travel on, but since remounting them like that will drop it an inch and a half to two inches, I'm thinking I'll need to get shorter shocks. But then again, I dont recall ever having bottomed or topped out the shocks before (replaced with same model rancho), so maybe?