Did you ever resolve your cooling issue? I'm running a 383 stroker in a 87 yj having cooling issues here in Arizona. Running a 180 t stat, 3 row alum radiator. Alum shroud with an electric fan. Will get up to 210 with no problems. And it's only 90 out right now. If we run the ac, it will heat up even worse. Been banging my head. Can't seem to find a solution. Help would be great. Thanks.