Moonshadow has lowering blocks on his outfit - which causes slapper bars and traction masters to get way close to the pavement. I don't know how he solved his problem - but it is worth asking. If you've got the room, either one will work - all depends on what you want to spend.
There are two forces to fight here - the pinion climbing the ring gear, rotating the nose of the housing upward at the front (main cause of leaf spring wheel hop) - and secondly the twist exerted by the driveshaft that raises the right rear wheel (we see the fender go down and it makes the wheel hop worse on the right side) and conversely drives the left wheel downward toward the pavement. There is a single reaction bar in my daily driver (02 Z28) that isolates the two forces - and stays up out of the way. It attaches to the rearend housing alongside the rear u-joint and runs forward to the point where the tailshaft U-joint hinges behind the tranny, so it has the same arc of motion as the drive shaft.

At the front locator, the one in the picture uses a "shackle" to give it some fore and aft freedom and the crossmember also mounts the forward safety loop. I have seen one of these made to bolt onto the thirdmember studs of a Ford nine inch - a very clever design on a streetrodded sedan. When you do it this way - the street ride of the car is unaltered for daily use - both rear springs can remain near the same rate and you won't get "spring wind-up". But you still can get the situation where the right rear wants to suck the fender down in a hard "drag" start. To fix that - I'm a believer in Air Lifts - (best design) or even a set of air shocks to preload the right rear for racing purposes.
My Olds 442 Cutlass has a big block and it likes 45 psi in the right rear bag and 5 psi in the left for instance - which makes it leave very level in a drag start. Both rear tires will have a nice even temperature. In about a minute you can let the air out and drive over to Sonic for burger .......using the air "preload' system makes your outfit a lot more comfortable to just cruise around in. It is also pretty easy to "tune" for tires and traction conditions - just change the air pressure.
Steve Metzger Tucson, Arizona