I've got a '72 FJ 40 that I've just pulled the engine and tranny, the tub comes off next week, so I can blast and paint the frame. It currently has a 4" lift with a SOA. Any suggestions on any popular upgrades to the frame before I blast and paint? The 1F has a few oil leaks, is there a universal gasket kit that can be purchased. I open to any advice before I tackle this project