Just checked a parts diagram - flywheel on 88/89 super 600 is same as the regular commando/bronco/standard 2

They do have a different jet

CR03522a - Tilt a cut
CR03655a - super 600
cr03685a - pro 550
cr03522a - Bronco/Rapier

This could be more the difference in v35/v40 engine packs though