S10's are relatively plentiful. I'd say sell it and get the one you want - it's going to be way less work, and faster this way, and you can probably sell your truck for about the same money as pay for someone else's. I suppose that if you want a crew-cab long-bed, that was never an option with these trucks, so for that, you could move to a C/K 2500 crew cab long bed. Or for way more effort, chop the back half off a regular-cab long-bed at the front of the bed and weld it to your truck. But you'll probably have a hard time selling it after that.