Ok so my new to me FJ 60 has several upgrades including this extended range tank. Wondering if any one can ID this tank. There are four 3/8" bolts protruding from the bottom of it in about an 18" square pattern. At first this made me think it was just a skid plate for the tank. After looking closer I can see that the filler neck and the fuel/vent lines are connected directly to fittings that are welded into the top of the passenger side tank wall. I have done a fair amount of searching and have come up with nothing that is similar to this tank. Any info would be great thanks.