Im running 33s now and they tuck up into the fenders so nice... I also have built a kick ass rear bumper. Ill get some pcs up asap. I know that if I want to run 38s, ill have to go to a 3/4 ton or more axle. I also am hunting for a 440 but that's a ton of money too. If I could find a four barrol intake I could squeeze a few more ponys out of the old 304. Its awsome to have people that know about IH, everyone I have talked to in the past don't know squat about them. How is your electrical skills? I hate that all the wires are green. The truck will just die out of knowhere. Then start like nothin was wrong. I know that it sould be a number of things but what do you think is the must common issue with a bone stock Scout?