I have a buddy that has a 02 F-250 7.3L with a 4" Pro Comp lift. He is wanting to lift it a few more inches (1.5 - 2.5) to fit 37" tires that he just robbed someone blind of. What is the absolute cheapest solution? We do have some fabrication stills, but are unsure as to this size of a vehicle. We are limited to our little Jeeps when it comes to fabrication. Thanks, Eric