Wanted: WTB: Old Cranks

Hi Guys

I've recently put new forks and wheels on the Superlight and have now realised I have almost all of the parts to make a complete spare bike. It will be a great little single speed 26" carbon hardtail coming in right on 10kg, I might never ride it but it's better than having the bits sitting in boxes.

The only critical part I'm missing is a set of cranks and a BB. I know I can get new XTs for $160 these days but this is a budget bitsa so I'd rather not buy new ones.

Does anyone have a spare crankset they're willing to part with for a reasonable price? It doesn't have to be anything too flashy but in good working order and obviously the lighter the better.

thanks in advance
d