I'm switching from STI 9 spd shifters to bar end 8spd shifters. Long story. Of course, the cassette on back is a 9spd, but I've got an older Shimano Hyperglide 8spd Cassette on my MTBike, and it fits onto the freewheel of my road rim, but when I put the wheel back into the frame, and extend the rear derail. all the way, the biggest cog of the 8spd and the pulleys on the derail. seem to clear, but with something like 1mm to spare.
My question, are cassettes MTB or Road Bike specific? Can I use this Shimano 8spd cassette with the Shimano 8spd bar-end shifters that are on their way or will I need to buy a road-specific (or 105 derail. specific) 8spd cassette?