I am currently working on my 87’ FJ60 to make it a decent overland rig. My obvious concern is fuel mileage. I’m hoping to rebuild the stock 2F instead of a V8 swap. I’ll most likely add the GM TBI. I was also thinking of possibly having a larger fuel tank custom made some how. Has anyone done anything like that or heard of it being done? I am planning on mounting the spare tire on the rear or up top so I’ll have a pretty large void next to the existing tank. Thanks!