Here is my reply I just posted on another forum......
Trust me, get bolt on. I went weld on with my 2003 4Runner for a variety of reasons: cost, availability - I could get Stubbs sliders in under two weeks, perceived strength, I figured I'd never take them off, I never wanted to do a body lift, I was happy with 33's, etc.
Now two years later, the one thing I hate about my truck are my weld on sliders. Make no mistake, the Stubbs Welding HD-SKO sliders are absolutely phenomenal. They are stupid strong, very well designed, have a kick out, and completely protect my truck. I have beat the **** out of them. I have the unique ability to manage to hit every damn rock in a rock garden with my sliders. I have slammed my rig down on my sliders countless times. They don't even budge. They are beyond strong and durable.
That being said, I really wish I had been more patient and waited to get bolt on. I wheel with a lot of guys with cruisers, 4Runners, and FJ's, and I'm one of the only ones with weld on sliders. Not ONE of their bolt on sliders have ever bent or failed. I have seen bolt on sliders from BudBuilt, Slee, Metal Tech, All Pro, and Shrockworks get beat on bad. Every last one of them have held up repeatedly. Enough so that I would not even hesitate to get bolt on sliders.
I fin myself wanting to go to a larger tire for more clearance, and also wanting to do a mild bodylift. But I won't because I will not be able to stand the bigger gap between sliders and body. It will drive me crazy. That and I find that as I have grown my experience as a wheeler, my wants in a slider are different. I would like more of a up angle on the slider, say 30 degrees compared to 15 degrees. This would give me more clearance on boulders. But I'm stuck now because of the weld on sliders. Yes I "could" cut them off. The scab plates will still be on the frame though and they may interfere with the new sliders when they are welded up higher. Plus just getting underneath the truck and cutting off sliders will be a major pain in the ***.
So my advice to you is think long and hard about what you plan to do with your LC both now and two or three years down the road. Is it a expedition rig now, but maybe you will gravitate more towards rock crawling in a year or two. If you even think for a second your needs or wants may change, I'd go bolt on. You can always take them off and resell them for a good price, at least 50% of what you paid for them if not more.
I'm taking my own advice and going with Metal Tech bolt on sliders for my 80. I want the flexibility and options bolt on sliders give me in a future as I know my idea of a perfect 80 will change over over the years.