I agree with
@tferrer that we have to dive deeper on those cars.
Amazing
@IMSA-CSL! Alpina certified your engine also as a B3 specs? That should be a great new. About the German authorities, not being an expert in the German regulation, but I think you would not have any trouble registering it as an H-Zulassung, don't think so?
And about the comment from
@bfeng, as far as I know, there were no Alpina B3S, as the B3 were the top one in carbureted street cars. Is it perhaps a B2S engine?