I was checking out your slider build... i need a set of those.
That's an older thread. lol
They are heavy duty, and very expensive. Tig welded, gussets, 1/4" and bolt on with plate sammich. They took a few people to make, and a lot of time invested. Don't feel like going thru that again. lol
If Money isn't a factor, and If you do it just like these, just be prepared to spend & take a lot of time for all the steps involved. These are not a weekend build.
You can cut costs/labor by foregoing the gussets/nerfs, using thinner metal, Mig instead of Tig, less legs, welding to the frame, and spray paint over powder coat.
I plan on making another set for the 94, but not as extreme. I will simply weld them (instead of bolt on) to the frame. Might even use a set of pre-made 70" tube slider kits, for half the cost as the Black Hole's. I want a set that has nerf kickouts in front of the rear tires. I installed a set like that on the FJ, and was amazed, how well they worked pushing the entire rig away from obstacles, and saved body damage.