I've run adapters on my S10 and Ranger. Just be sure to check them a few miles after you install them. Then again at, say, 1000 miles.
My S10 was lowered on WS6 wheels for a year with no problems(2.5" thick). I beat on the truck a lot too. Then I had adapters on my Ranger running Cherokee wheels and didn't have any problems either(1.25" thick).
I would use them again