RER, If I saw it correctly, single TB and 1 injector for each cyl. positioned about where a 2 TB's are.
Gearman, because of needing the carb at an angle, it wouldn't breathe right. If you do a search here at WG, you'll find a thread that really talks about that manifold. He did think that if it was turbo'ed or blower, it may have worked better with pressurized air. IF there would have been room for the carb like on a Triumph single carb, it would have worked better.
Tom