It's wierd that in the USA you can buy light vehicle (car, ute, 4wd, suv) batteries are places like Costco, etc. The Bunnings hardware stores here in Australia do carry a small range of vehicle batteries. Auto parts stores are the most common...
Unfortunately, the harness side connector for that sensor is not available from Toyota as a service part replacement. You would either need to find one from a junk vehicle and cut if off and splice it into your harness, or you will need to find...
Never worked out what the correct one is. TBH the AC has never worked in my 80 since I bought in mid-2011 and it's not a core concern, but I'd like to fix up the damaged wiring so at least it's there and possible to re-enable.
There are places that make valve shims. We have one here in australia called Precision Shims which I have used last time I did the shims on my 80's 1hz motor at 600 k km's almost 8 yrs ago (yeah since then it's been driven a lot less) because I...
Top of lower spring seat to bottom of bumpstop at the front. There is a 'factory' measurement for this but not sure of the number. Both sides should be close to the same.
If you use factory rear arms the quality of the bushes is that of genuine toyota. Do *NOT* ever use poly bushes for those! Or the front arms, or panhards, or swaybars.