XBMC4Xbox

I've been tempted lately to try and get hold of a 128mb xbox. I've seen the prices of a couple on here in the past and they're probably more then I wanted to spend on one. I'd like to know if anyone has just a modded motherboard they're thinking of selling or alternatively, if anyone on here provides a service for this mod?

I've got a couple of working 1.4 xboxes and a dead 1.2 xbox which hopefully has the ram chips working ok and can be used as the donor.
If anyone can help out at all then drop me a pm!
Cheers