Thanks.
Might think I'm crazy but I am building my own NOS System. For the nitrous itself, I'm using N2O Whipcream Cartridges.

N2O for Whipping Cream

There's going to be some testing involved of course but at $15 a case (24) I figure that's about 24 passes at the track.
Next race night is just over a week so I'm looking to get this done by the weekend and test it all next week. Currently collecting all the parts.
I'm running high octane airplane fuel and with the nitrous, I should have enough to compete in my bracket at the track.
I'll post some updates.