That is what I used for track car. One of those old people aluminum tanks with regulator and 2000 psi nitrogen in it.CO2 tank with a regulator could work if you didn’t want to buy a Viair setup.
I have the same one and I've had it for years. We use it all the time and even though I generally don't recommend anything Smittybilt, this has been a fantastic unit and I think it moves more air than any other portable except the dual ARB unit, which costs about 3 times more. BTW, I also have the Coyote deflators, have had them for about ten years with zero issues.I picked up a Smittybuilt 2781 yesterday for $170. It's rated at 5.65 CFM. I tested it today and will inflate my 35x12.5/17s from 15 psi to 30 psi in 1:40 each. I tried it 3 different times and was within a couple of seconds, which is well within the accuracy of any tire gauge. So far, I'm pleased with this gizmo.