Running 6.5 gears on 33" tires with 5.12 and the mighty 970cc in my SJ-410. I manually beefed up the long arm and just ran the Rocky Road transfer case mounts for a long time. I finally tore up a couple of bushings, that in turn cracked my top transfer case mount, which allowed the transfer case to flex a bit and work the bolts in the lower mount a little bit loose, which allowed the mount to break off the transfer case when I dropped it on a rock. Not the most fun I've had on the trail.

If you don't have a skid plate, I would get the Mighty Kong. If you do have one, you can just beef up the mounts yourself with some angle iron and a welder, then pick any of upgraded bushing sets available. If you use the Rocky Road ones though, get some larger high grade washers. The small ones they send tend to dig into the bushings and cause them to tear. The aluminum/brass bushings that are now available are nice, but any chatter in your drive-line will be transfered to the frame. If your drive-line is nice and quiet (like it's supposed to be) it shouldn't be an issue. Low Range used to have some really nice looking "bulletproof" t-case bushings, but it looks like they pulled them off the site.