Those wheels look like they are in good condition, the hubs are Deore which at that time was 2nd to top of the line (Pre 1990) for Shimano. Looks like its a Freehub Wheel with a 7 Speed Cassette. are you running SIS on the MB-2? is it 6 speed ? or is it Friction. 1986 was a time just before SIS hit it big.