Check 589 fabrication.
They have wheels manufactured by REV Wheel, a very quality bunch, but a 17" bead lock wheel.
Might not be your thing if you plan to put a 20" wheel on a 4X4.
I prefer more sidewall on my trucks, but I use mine on gravel and back country.
A 20" wheel tire combo will certainly sharpen steering response at the risk if rim damage if used off pavement.
Ensure your wheels are hub centric with a 67 mm hub.
I would also suggest staying away from E rated tires. Not only do they weigh a ton, which kills accel/braking/mpg, but they’re super stiff. Most useful sizes of BFG ATs are E rated, unfortunately. That’s why I run a different tire