Bridgestone Spitfire S-11s on the 1981's front and rear. Very nice tires that seem to be unaffected by pavement rain grooves. I run them at 34psi front and 39psi rear. Disregard the air pressure suggestions in the OEM manuals, etc. New, modern tires perform much better at higher pressures. You'll not wear them out as fast, either.
Oh... they fit just fine. Skip the 120 size for sure.
Still have perfect Dunlops on the '83 R65.
Monte