I've got to piece my engine together is there anything to watch out for as far as parts interchangebility between the different year GS500's? Ed
Sorry Ed, only thing I can think of is the bearing caps. Shouldn't mix and match them.
For the rest of the parts, you can find the part number on bikebandit.com and then copy & paste it into their search bar. Then there will be a small button that says "fits machines" or something.
Could you be more specific on what parts you will be changing?