I have a 81 Pickup with A/C and a four speed, what a Slug. Overheated recently. So I pulled the head, its a 1500cc, no wonder it was a slug with the A/C on. Cylinders are scored at the top. Not even worth the trouble. I have a 89 Jetta engine that will be turboed with five speed. Should be a lot more fun to drive! I was only getting 25-26mpg with the 1.5.