[Zeke]

All I can tell you is the Weltmeister uses all 3 and the shock nut, as you already know. Don't use this model unless you cut out the center part and leave the shock part to float. If you look at the design carefully, you will notice that the shock will be cantilevered when the suspension is at either end of full travel. This in turn places a lot of stress right where the shaft is machined to make a shoulder. It can and has broken according to past posts. I used a modified one and was happy for what I got for the overall cost.

I now have a Rennline on the shelf (no car) and it has integral monoballs, so it uses all 3 as well, but allows the top of the shaft to move side to side as the suspension travels. If it weren't for the OEM rubber bushing, the Weltmeister could not work. In fact, the way I see it (and the way Chuck Moreland, owner of Elephant, sees it), if you had monoballs and a Weltmeister, you would snap your shock shafts off in no time due to the binding.

Make sure you understand which of these are designed for use with a monoball and which are designed for use with rubber. Any time I see "appears to be two center-most bolts plus the top of the actual strut," I think they are wanting a monoball installed.

Sorry, I didn't look each one up. Those are some good names in performance parts. With proper advice, I think any of them would be sufficient for most of our purposes.