Glenn, I was poking around on I-R site and saw the "lubricated' versions. I realize I would be best off to make sure to get the right starter(and check engagement) to make sure it would fully engage properly as to not eat up the ring gear. The air tank would be the biggest issue, as I was hoping to make room on the truck...not fill up MORE space LOL! Had thoughts of daisy chaining a few smaller round tanks(std issue stuff), and hang them under frame. I could hang two on each side of truck, one set where batteries were, and one set behind my diesel genset on drivers side. I know the more the better, but would have to work that out before going too far with it. Running out of air would be a bad thing with this set up, as usually where I go....there AREN'T more trucks to use as "air chargers". I would definitely have air system totally separate from rest of truck, using a one way valve to charge. Maybe even a extra electric soleniod to shut if off while truck is off? Double reduntant? Something to think about. Think about it though. 15 secs of air is still quite a long time. Even after sitting in the garage all week, it doesn't take 5 secs to get starter. Sometimes I let it crank a few times just to get oil circulating before I let it fire off. With air, I guess I'd just hold the pedal(feed it fuel) and let it start. It's always been a good running engine and starts in single digits with NO ether! (tried and tested). Sure not with air starter, but won't be an issue now. Guess I need to poke around and find a starter first, then some tanks. Long term project for next winter? Flynpig: Ya, I'm familiar with Optima batteries. Nice, but I am not into the big price tags for what it is. I still run regular battery in my race car with no issues. I usually change it every few years and rotate it into one of my other hot rods. I still run (4) 12v batteries in the Mack (which is way overkill for it), but it will darn near run down the road on the starter. They are still in good shape, but I'm sure they are nearing their lifetime quota that is why I'm thinking changing over. Thanks for all the input guys.