Ball and cup replacement for a mild 273

I Found a set of adjustable rockers at the junkyard that were off a 273 barracuda and now im looking for a set of ball and cup pushrods. I plan on using this hydraulic cam http://www.summitracing.com/parts/cca-20-210-2 and i was thinking since stock pushrods are 7 7/16" these would work http://www.summitracing.com/parts/cca-7821-16 ?

Any insight would be greatly appreciated!!


Jake