Can I "borrow" rocker arms from my '65 273 for my '71 340?

dibbons said

I'm still not ready to assemble the 340. However, I just remembered the 273 rockers and shafts were reconditioned by a place up in Northern California. I will have to pull them out of storage to inspect, but if the rocker arms have bushings now, maybe the shafts won't necessarily need the grooves?

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Hi there,
If you had Rocker Arms Unlimited
In California recondition your Rockers and Shafts they probably did cut banana grooves in the shafts if they weren't already.
They recently put bushings in a set for me
And highly recommended grooving the shafts.
Especially with a hydraulic cam.
If their not grooved you can do it yourself carefully with a Cutoff wheel or the like...