I'm in Costa Rica and I'm a fj40 newbie. I've got a 1980 diesel. Seems to be in good mechanical and physical shape for the most part. However, I'm experiencing one main problem: It gets very hot in the cabin while driving. (Even though ambient temperature outside is 70 degrees). The engine temperature is fine. I have two ideas. Please let me know if I'm on track, or way off base: 1. The interior needs new rubber flooring. I've got a company here that custom fabricates and installs to the exact fit. Will this prevent the head (which I'm assuming is coming in from the engine compartment or possibly from under the truck?) from heating up the cabin/driver's area? There's also a local Rhino-lining franchise. Would either of these help or hinder? 2. I seem to remember seeing some type of insulation blanket that would go in the firewall area, under the hood. But can't seem to find a link to any of the suppliers online. Is this something I can buy at a local auto supply store? Do you think it will help? Thanks, Rolex.