Guess your saying the 216 carb doesn't fit on this manifold. You can make it fit by extending the mounting holes, use a saw or abrasive blade. I've seen lots of 216 carbs done this way but of course the actual 235 carb would be best.

It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed