If I remember correctly, the only difference in the wipers are ours (81-87) have the longer nubs that the wipers connect to since they extend outside of the cowl panel. The earlier years are shorter as seen in the pic above. Hinges bolt to the fenders on the earlier years as well so you wont have to change much. Just ditch the cowl, get the shorter wiper studs. Someone correct me if Im wrong but thats what its lookin like. I ditched the stock firewall because mine was rotten, Im at mid build on my new one.
