[ALMACK]

Originally Posted by HandOverFist

Yeah, I kept looking at those lowers and it appeared to me a better possible angle vs all the rest. Only downside I see is they are likely heavier pieces than any other...weight in the right spot anyway.

Edit: I said Southside Machine, but these are actually UMI, a copy of the same. http://www.ebay.com/itm/360192700262?item=360192700262&viewitem=&sspagenam e=ADME:X:AAQ:MOTORS:1123&vxp=mtr Guessing those plates on the sides are for an optional sway bar mount?

I think Southside's patent expired and Lakewood and others are free to make those "Southside" style LCAs now. At least that was my understanding.
They are 100 % bolt on, but you have to drill a hole into the side of the LCA brackets that are welded on the factory rear end housing in order to place a 3/8 " bolt.

I have used original Southside brand LCAs for years on my T-Birds with the factory 87-88 Turbo Coupe sway bar.
The pic attached is my Gray Bird with Moroso drag springs in the front and Southside lowers with dual air bags.
I set the pinion down 3 deg. before I drilled that one hole I mentioned above. Then I used adjustable uppers to dial in the hook.
Unlike other cars that "squat" in the rear on launch, those bars help lift the rear and plant the tires.