Yes you can do this. There are several companies that offer anywhere from pieces a la carte to complete kits. Trail Gear has a pretty complete front kit for $1100.00 shipped. These kits have all dropped in price quite a bit in the last couple of years due to competition. This also means the kits are tried and true, There are tons of guys running these parts with safety and success.
That said, I'm cutting up my '86 June 1st and installing the full Trail Gear kit. Wish me luck. Here's a pic of the TG front kit. VERY complete!
My front axle, since the pic I've cut off the stock shock mounts and welded the TG knuckle gussets, painted it, and installed the knuckles.
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2023 Ice Cap ORP - Dobinson MRR 3/2, JBA, BOTCK, Titan7 T-AK1 17x8.5 -8, Falken AT3 285/70, Cali Raised sliders, D.S. grab handle, Perry's bump stops, Ceramic Tint- 18%/35% metered at 14%/11%
Previous 4Runner '86 4Runner SR5- SAS'd/locked/dual cases/35s/5.29s/223:1/yada yada.