SH1/18 carb on a series 2

For some reason my series 2 Li150 has a knackered looking SH1/18 carb rather than the standard MB19 BS7. Does anybody know if these two carbs fit the same inlet manifold?
I put this question in the Carburettors forum so apologies if either of these posts is in the wrong place!
Cheers
I put this question in the Carburettors forum so apologies if either of these posts is in the wrong place!
Cheers