I have 3 Yugo Underfolder kits M70AB2 left over from my purchasing frenzy last week. Asking $139 plus shipping for each of them. These have dark bores, but I would not consider them to have the sewerpipe types. I've managed to scrub several of them to look very decent. I can even remove all of the revits, to include disassembly of the underfolder stock, for $30 extra.
ETA to include pictures:
For those that have requested pictures. The kits go from #1 on top, #2 middle and #3 bottom. All have missing slant breaks, but everything else is in their bags and have matching numbers. #3 appears to swallow a round at the throat and has the top part of the grenade site cut off (not by me, though). Let me know if there are certain areas of the kit that you wish for me to take pix of.