My has been sitting since august, and I can walk over at any point and it will fire right up, so no. I would use fuel stabilizer if it’s going to be sitting.
Owning your first FJ40 is like losing your virginity: it’s expensive, awkward, and you’re probably going to do it wrong; but none of that stops you from trying again. 😁
I had to build up every point of my header where the bolts should have lined up. Welded a few passes on each one, then ground them flat and used a die grinder to shape the holes. PITA, but it worked.
There's a kit out there that bypasses the AIP. I used it when mine went bad at 150K. Here's a link to the bypass kit. Paul is a good dude and easy to reach if you need advice.
https://hewitt-tech.com/store/index.php?l=product_list&c=32
If you decide to replace the components, be aware that...
I'd remote mount it. it'll get real hot under that hood. Intercooler def. Reach out to Jim C. We talked about this years ago, and while my mind has lost that info, I'm sure he's got it tucked away somewhere.
I had over ⅓ of my frame replaced recently at Iron Pig off Road. Lance fabricated all new inner plates, new rear crossmember, and all new spring perches, etc. It was a hot mess, and now it's stable and solid. He knows what he's doing with metal, and has a lot of experience doing the frame...
I had stock springs at first (35's) and then had custom springs made in maybe 01 or 02. So a LOONG time ago (we did the SO in '98, I think), but I have 37's on mine and it looks about the same as yours. It may be an inch or so lower, but it's had some time to settle, lol.