haha I do have an 86. But I was planning on putting in a custom 3 core radiator anyway to make sure the 3800 stays cool. Hmm and I'm glad to here about the ax5 mine already needs a rebuild. How about an auto? is there and automatic that would work for this? My truck doesnt see a whole lot of street and if it does its mostly just around town. Only has 78,000 on it. It mostly gets trailerd to the trails and back more than it gets drivin there.