It is a 1963 292 in a Grumman Kurbmaster.

Just for fun, I kept looking, ended up at www.rockauto.com
Guess what? Their rebuilt carbs from Autoline show a different part number for the 292 and 230 carbs... and an excellent price {$123.79 + shipping, includes a $30 core}

Guess Autoline was able to figure out the differences Holley reman ignores!