They are great trucks. Drive/handle awesome (for a truck) and of course the V10 has HUGE potential. My buddy owns/runs a performance shop. He has already built a turbo SRT10 Ram that is putting out over 1,000hp and has another one he is working on now with a supercharger + nitrous that should be well over 1,000hp as well. Their potential is only limited by the amount of money you have in your wallet. He owns one as well and he drives the living pi$$ out of that thing. Not to mention tows with it (he has a regular cab version). The only problems he has had with his are normal wear and tear which he has brought on himself due to how hard he drives it.
Here are a few pics of the truck he built with the turbo along with dyno sheets.
Pump gas dyno
Race gas dyno