I really don't like comstar wheels one little bit, and I'm certainly no expert, but I think the front comstar was used on virtually everything from the 250 Superdream upto the 1100 GoldWing.
The rear wheel was unique to the 750F series but I'd think that the spoke plates might be the same as other hondas with 18" rear rims.
Maybe worth buying a scrap (bent) wheel from a breakers ?