It really won't matter what jet you use- - - - -dual Rochesters for a 235 flow far too much air for the majority of throttle opening positions, so you'll have lean spots just off-idle no matter how rich you try to jet the carbs. Find a couple of Carter carbs for a 216, and re-position the mounting studs for the narrower spacing. You'll be much more likely to have acceptable low speed and midrange performance, and little, if any loss of high-RPM horsepower.
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!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!