I am kicking my self for buying a reg. cab truck. Ok here is the deal I like to ride dirt bikes and when a buddy and I go riding if we take my single cab truck there will be no room for gear. So I was thinking maybe I could find a long bed and put it on my truck, then have a truck box in the bed and fit two dirt bikes in there. So my question is can you put a long bed on a short bed frame? Or how hard would it be to put an extended cab on my frame?

Thanks,
Brian