Welcome to this forum, glad you found us. Always glad to hear about someone else that has caught the mod bug. If you don't mind a suggestion, keep the body as low as possible, and do your lift in the suspension. To fit 37" tires I would suggest a 6" long arm lift, and at the most, a two inch body lift. That should give you plenty of clearance for the tires. I know the 6" lift is very pricey, but well worth it, if you are going that big. You will get better articulation when your lift is mostly in your suspension. Have fun with this build, and definately show us some pictures along the way.