Nothing radical here, just wanted reasonable torque for acdaily driver and occasional towing in front of the TH400:
Goodwrench 4-bolt, Heads 14092360 1985-89 open chamber, oval port, “peanut” Intake Valve Size-2.06, Exhaust Valve Size-1.72, Intake port vol-253 cc., bored .030”, original crank...