I really want to try rebuilding an engine at some point and while the current engine in our 71 FJ40 runs reliably, it has bad compression numbers, major scoring in several cylinders, and burns substantial oil when downshifting (even after replacing valve stem seals). Has anyone done a F engine rebuild recently? Pretty much all the posts I read talk about how the F engine parts are harder to come by than the 2F parts, and those posts that do talk about F engine rebuilds tend to all be 10-15 years old at this point. Are F engine rebuilds realistically possible without spending a small fortune on small batch reproduction parts anymore? I read some old posts that toyota forklifts used the F engine and had rebuild kits/parts avaliable, but I haven't found much on this with Google. Are the forklifts engines named something else? I know that most people just get the 2F engines as replacements, but I would like to keep everything all original if possible.