36 rim lighter than my steel one

I have a modgepodge 36 that I built 4 years ago when I was 13. I think it’s pretty cool if I do say so myself and it is my most doted on cycle, not always for good reasons. The specs:
Original nimbus nightrider square taper frame with added brake tab
Nimbus super wide hub
Kh free ride saddle and touring bar
Avid juicy disc brake
Mountainuni sinz crank dual hole 125/150 disc adapters (the originals before Udc and KH took their ideas…)
Steel rim and nimbus nightrider tire and previously a foss tube. I say previously because when I went to take it out for the first time after winter the thing was completely flat. Aired it up and it shrank again. Changed to my spare normal rubber tire and that leaked. Then on to my original rubber tire and that leaked as well. So, working in a bike shop I figure I’ll just ask my boss if he’ll help me go tubeless, but if I’m going to do that I may as well just go all the way and perfect my lovely ride to no longer weigh 3 billion pounds.
All I need is an aluminum 36 rim bare. It doesn’t really matter what generation as long as the nightrider tire fits. Preferably cheap as this is the goal of my whole setup. I also have a KH mountain unicycle 24" that I may be looking to sell if anyone is interested. Thanks so much!

I don’t know if it will help, but if you do get a rim I’d buy the old steel one from you. I don’t want to spend much, but depending on the cost of shipping it could help offset the new rim.

I’ve been collecting parts to build a 32" ultimate wheel, but if your rim becomes available I may just do 36. I have a tire ready to go for it.