I have one of these

https://www.tradetools.com/product-r...-50amps-112lpm

It takes 45 seconds to put my 33s back to 35psi.
I have made a rear storage system to fit it.
I've had it since January 2010 and it hasn't missed a beat!
It even runs my rattle gun, great for trips or at the drags with the Ford.
Cheers