Got asked this today but couldnt give an informed answer.
On a six pot engine you quite often see twin turbos, presumably this is cos they have two exhaust manifolds and 3 cylinders gives enough exhaust to spin up a turbo.
Q is - could you twin turbo a four pot engine? either with both turbs on one manifold one after another or two separate manifs (can 2 cylinders drive the turbine)?
Not something hes considering, just one of those strange Q's.