superstock springs rear clamps?

So the upper and lower plates need to be fairly thick for clamping capability?


http://www.summitracing.com/parts/mrg-1293


http://shop.advanceautoparts.com/p/autocraft-leaf-spring-clamp-kit-1-set-ac131401-13-140/10053472-P


either of these will do.

i use the auto crafts