MJ's 71 Beaver (Dart)

The Calvert set up is the best listed.
The S/S’s don’t need a traction device added
The /6 bars with Calverts is possibly the cheapest and should still get be effective.

Assassin is similar to Calverts set up but better by a hair.
Use sliders at the rear of the springs.
If using stock type springs, cut the rear clamps off.