Yeah its in my '81. I really don't think wear is a problem at all. it doesn't use oil or smoke at all. Id rather lose my weight in the crank, but i just don't have the money. I figured if i could lessen some of that rotational mass i cold get some better revs and better economy. Id still like some good heads, i don't have time to pull mine off and have them worked. its my only ride. i dunno...