Search "235 Chevy rocker arms" or "216 Chevy rocker arms" I have found 3 complete sets and several components, plus a couple of sets of new shafts in the past hour. 216 rockers will fit, but you might have to do a little tweaking on the oil supply system.

It's fairly simple for anyone with a lathe and a few active brain cells to bore the rocker arms out and install bushings to get them back to the correct fit on the shafts, so don't discard the worn ones.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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