Heads , 440

Oh ok, i was thinking it was in your car.. so i may just order these trick flows. I am assuming they will accept the factory rockers and shafts? Will probably be using my current hydraulic non-roller cam for the time being..
Also, i see this on the ad:
Notes:

Longer than stock pushrods may be required. Minimum bore size is 4.320 in.


So what pushrods would i need? Sorry, im used to the factory stuff so not sure.
You'll have to figure out the length with a adjustable pushrod length checker tool.
I don't know of anyone using factory rockers in those heads but I believe you can.
I run the harland sharp tf rockers.
If you wanted a more factory style, using factory stuff...the 440 source heads would be a good investment.