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

The TA pushrods are the correct length at around 7.25" but they are hard to find. Anything close to that will work
fine..remember they are adjustable. I've never seen an inadequate oil problem using regular shafts?
I think i have a complete set of ball cup pushrods that will work at about 7 5/16".
If interested PM me and i'll check