i used ekstensive metal works bracket kit which is a cup on bottom and a torsion type bag plate on top, works great cause then they lay out with no spindles on 20s
they will lay out without spindles on 20s with cups too. I think it is 6 or 7 inch tall cup and flat plate on the bottom. Trim a bit of the spring pocket on the lower control arm...
For the top we use a 5" round tubing thats 4" long and it will lay a 22 with that...and for the bottom we grind the high spots and weld a bag plate on the bottom.