http://www.suicidedoors.com/node/1103

BBP

"The super pivot joint is a high quality joint that allows your axle to articulate from side to side. You would want this type of setup if you were going to hit some good side to side with the switches"

Its good to allow the rear end to articulate but you don't want the rear end going side to side. Maybe they had a poor choice od words???

Do you plan on using a rear sway bar that mounts to the lower control srms?
Do you care about the harness of your ride?

Yes, to both questions.

I think they were trying to say articulate, as in body roll without binding as all poly rear bushings do?

These LCA's are .25" thick. I think I can drill them OK for Sway bars? Would that support Sway bars or would I need more support, like a welded on angle?

I like the The super pivot joint, which should eliminate the Poly binding.

These look like a really cheaper version Currectrac Rear Lower Control Arms

UMI LCA say: Constructed of boxed mild steel tubing, 0.120" wall and 0.188" thick mounting plates.

BBP

Yes, to both questions.

I think they were trying to say articulate, as in body roll without binding as all poly rear bushings do?

These LCA's are .25" thick. I think I can drill them OK for Sway bars? Would that support Sway bars or would I need more support, like a welded on angle?

I like the The super pivot joint, which should eliminate the Poly binding.

These look like a really cheaper version Currectrac Rear Lower Control Arms

UMI LCA say: Constructed of boxed mild steel tubing, 0.120" wall and 0.188" thick mounting plates.

BBP

Sway Bar
You COULD drill holes in the control arms and bolt up the sway bar up but you will most likely crush the control arm(not as likely with 1/4 thick steel). To mount it properly you would want to drill a large hole where the bolts would go though. Then insert a sleve that will go through with control arm flush. (weld and grind flush if possible). This will prevent the control arms from crushing when you tighten the sway bar.

Ride
Poly bushing and rod ends will give a harsher ride than rubber.


So.... If I were you I would be leaning to buying a set if stock boxed arms or box your orginal arms with the box kit which has provisions for th bolts, and install new rubber bushings.

The ad makes no mention that the arm fits any particular car. Sway bar? It says 2x2 construction so it's just a guess at this point if a Chevelle bar would fit. Besides, the 2.625" pivot is too big to bolt-on to a stock Chevelle bracket. No mention of the poly size either. That joint size is a typical 4X4 truck part. Read this http://www.chevelles.com/forums/showthread.php?t=257851 and hold on for a bit.