All you need to do is measure one. The adjustable rocker arms will compensate for any minor differences valve to valve. That's why they are adjustable!
Thanks for the advice, GTS. :prayer: I'd assumed that was going to be the case but every time I've assumed things before, they've come back to bite me in the ***. #-o I wasn't about to take chances this time. I still want to run through multiple checks to make certain I've done it correctly before ordering the pushrods tomorrow.
We don't have a cam card or know the specs on the camshaft that was installed. :evil3: If we did, I think I'd try to rig the degree wheel on the front of the engine and verify timing.