You're probably going to have to scare up a set of 4V heads or find a set of aftermarket 4Vs . . The 2V intake ports are about half the size of both the Boss 302 heads and the 4V Clevelands . . A stock 4V manifold (if you can find one) will bolt on but the effects of the port mismatch would probably be worse than just putting on a bigger 2V Carb . .
The "Cleveland" was a hell of a good idea . . 30 years ago . . .
Postscript here . .
Be careful when buying "Cleveland" heads . . Make sure they're either "Cleveland 4Vs" or a true set of Boss 302s. In the last few years, I've seen three sets of "Boss 302's" that weren't "Sets' . . The Boss 302 heads were directional, right and left, no water passage into the intake on the back, and you need to look and make sure you have a "Set" and not two lefts or two rights . . Cleveland's on the other hand could be used on the right or left. They have water passages on both ends . . .
Dunno how many people out there know stuff like that 30 years later . . .