Hey Dirt Dauber, I have a '74 FJ40 my Dad bought new from the dealer. Taught me how to drive in it. Very special to me. We always planned on what to do to it for improvements and I'm going to slowly do them on my own thread once I get started. Let's just say it's an AZ truck and it's beautiful!!! Anyway, I'm going to update the paint to TRD Pro Terra Orange Pearl (4Z0) because I love how it is kind of like the original red but better like a TRD Pro FJ40 if Toyota was smart enough to build one. (Not the Landcruiser isn't it ... don't even mention the FJ Cruiser.

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I'd really like to know how much paint you used on your '40. I'm going to use single stage paint after reading several posts about the subject on this amazing website ... I love this place!) Mine will be a crawler with limited exoskeleton here and there to protect the body where contact is somewhat inevitable. But pushing through brush will be a normal occurance so scratch repair can't be a major undertaking.
I realize I'm late to the party, but the stiffener kit you showed way back in 2018 was only for the front of the frame and helped with the swap to saginaw and it looked like it even had provisions for a better sway bar system. Not sure. The frame can take the torque of a cummins 6BT without any stiffening the way it is. Unless you intend to bounce up objects. I'm not doing either. If you noticed when you bolted the body back on, it is also built to flex with the frame e.g. oval holes to connect the front clip to the tub, rubber grommets everywhere the body is bolted together, and the great pains Toyota went to to allow the body to be firmly mounted without limiting its movement independent of the frame. Add an intelligently designed suspension that allows plenty of droop and some traction control in both of the huge pumpkins and you are unstoppable!! ... IMO LOL