Yeah it makes an amazing difference. Not great for driving around town persay, and when you are driving to the Toledo Pro Solo and the alternator tensioner bolt breaks leaving you with no accessory belt and no power steering, it's really not great.
I'd be interested in the fuel setup you guys are using with the cell as opposed to the gas tank. I'm still looking at SM in which fuel cells are legal (min of 5gal).
Speedyham, is your AWIC one which sits on top of the engine still in the stock location or relocated elsewhere?