Like WeaZle said, S-10's kinda suck for pre-runners... HOWEVER, it can be done if you have the cash. I've seen anything from 11" wheel travel 4x4's (which keep breaking front pinion gears), to 4x2's with Ranger suspension on them for the travel.
The sad truth is that the a-arms just don't cut it, and apparently the aftermarket doesn't seem to care much for it.
Fishyoo7 mentioned the 6.5" travel kit from companies like Camburg... Yah, they have them, but if you buy Toyota or F*rd you'll end up with something like 10" to 15" of USABLE wheel travel.
In my honest opinion, if you wanted to go and spend the money to make a good S-10 pre-runner, more power to you... if you're watching the budgie, then go for a Toyota and swap in a Vortec V-6 motor! [img]/wwwthreads_images/icons/smile.gif[/img]
PS -- if you are serious about the S-10 idea, then I would suggest you contact Jeff at California Super Trucks
. He can pretty much build you what you want, just be ready to pay for it. I would suggest to contact him only if you are committed to spending some coin on getting what you want...