Not a Vette guy here, and don't know what the spatial relationship around the lower ball joints are, so forgive the ignorant question, but what exactly do you mean by "extension to the offset"?
I am trying to torque the rear lower balls on a C6 Corvette. Spacing is tight and I need an extended Crows foot. 21 mm. I mean an extension to the offset about 2 inches would be nice. Can anyone give me a lead??