thinking out loud here, so tell my why im wrong, but I can see these working on the front of an a-body for a whole lot cheaper than SPC or other options. theres got to be a reason im wrong though, just cant see what it is. google has given no results, so either I suck at searching, the first guy to consider it, or it wont work.

http://www.speedwaymotors.com/Adjustable-A-Arm-without-Cross-Shaft-Strut-Type-9-Inch,31968.html

only potential hiccup I see is not enough misalignment in the heims to work with the eccentrics.