The Carter YF that fits a 232 cubic inch AMC engine has slotted throttle base holes that will fit either a 216 or 235 manifold bolt pattern. I've got a couple of them stashed away. With a little bit of tinkering with the main jets and power enrichment system, it can be used on just about any displacement engine from 230 to 300 cubic inches or so. Did I mention that it's also a Carter? Plenty of 'em on Ebay at reasonable prices!
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!