Cool,my first Jeep was a '65 Kaiser CJ5.Powered by the same F-head 4-cylinder as yours,'till I broke the crank @ the #4 rod journal.They are as wide as a V8 journal is for both rods but for one cylinder.Mine cracked at a 45* angle, and would still run.If you let the clutch out it would saw the bellhousing with the flywheel! Mine had a nice aluminum top also,sliding plexiglass windows and all.
RT