The only person who can help you is yourself.
You need to get an adjustable pushrod length checker, and you need to use it to get proper valvetrain geometry. Once you are sure you have proper valve train geometry, measure you adjustable measuring pushrod with something like a digital caliper and call Crane or Comp or some other cam maker and they can send you custom length pushrods no problem, or you can order a matching part # from their existing catalog.