I have a 1986 750 and the easiest and most unmodified thing is to put a 1988 750 (J) rear tire on it. Regarding the front tire, I recommend that you put the entire set of forks of the same model mentioned above for safety...
•Recientemente vi a una persona haciendo unos espaciadores para instalar llantas GSX-R modernas, versiones K - L, me pareció un trabajo bastante limpio para poder replicar..