I have some of these, they're nice. Find Olympus Offroad on facebook, that's where they are showing all their weekend deals.
http://olympusoffroad.3dcartstores.com/Soft-Shackles-_c_407.html
https://www.summitracing.com/parts/tgi-130004-1-kit/overview/year/1980/make/toyota/model/pickup
Get it as far forward against the body mount as you can, so you can run any kind of toyota rear spring.
I have a 2010 with AFE exhaust and intake, sinister diesel Egr delete. With a RaceMe programmer bought directly from RaceMe. Truck has never run better. Had to sign an online waiver for the exhaust.
x10 for TMI. https://totalmetalinnovations.com/
I used 2 crescent wrenches on each end, no problems. I started with one big crescent in the middle, but liked using 2 better. Order your design, have them in a week and half.