[blykins]

Yes, they will work with stock heads.

They use a standard FE pushrod, ball/cup. The kit comes with a pushrod length checker as it's always a good idea to recheck pushrod length when you change valvetrain components. I can't really say for sure if you'll be able to reuse your existing pushrods, you would have to mock them up and see. However, that would be the case with any aftermarket rocker arm setup.