You have to be DAMN careful. Some of these stupid Chuvvy heads assume "that's the only engine on earth" and there's some stroker combo that is 360 CID er somethin. So you have to read between the lines. One tipoff, of course, is the distributor hole in the back.
HERE is a serious question. Any of you guys have a used or new set of SB and BB intake gaskets or heads, you can lay side by side and get a good shot of port comparison? No I realize the "end to end" spacing will not be the same, but you can take a B/RB setup and saw 'em in half, so each pair of two ports can then be adjusted.