Back in the day there were some guys attempting remote mounted turbos. That always seemed to me to be a better idea because the piping would cool your air charge and exhaust acting like an intercooler.
Just an idea but turbos would fit nicely under the back seat area
worst thing there is oil feed and return for the turbo. bare minimum is a pump near the turbo to return the oil to the engine. best solution is seperate oil tank, pump and cooler etc just for the turbo.
neil.