I have a 1984 Audi 200 quattro avant with an aging KG tubo engine that could have an engine transplant witha 1985 KH turbo? The existing KG is a 2144cc 134KW/180 bhp. I am reluctant to replace it with anything too low powered. Does anyone know the Kw/bhp rating of a turbo KH? Has anyone done this sort of transplant before please?