RR3, where my engines are modified, meaning rebuilt with all new parts but also altered, the costs are twice what Dubey's Star Motors charges. But then, we do more, everything. Our Goal, to cut as much friction as possible. I suggest Dubey for a more modest cost. If you wish a monster, without the thought of cost, MBI in Portland, Oregon. phone 503 231 0444. Trannies, Neil's firm is king. Fuel injection systems, two firms in California. Rear diffs, only Neil's Star Motors. Front end rebuilds, any good local firm can do it. Ditto for the entire fuel delivery system. Shift to 15 inch steel wheels with stock 15 inch hubcaps, the identical 6.3 look. Tires, 225/60 15, front and rear.