Well my brother bought one, at least he thinks. The turbo has no badgin on it, the compressor housing is larger as the wheel, comes with a complete OS giken clutch kit and flywheel. Havent taken the valve cover off to inspect the cams or checked the throttle body. The plugs are green and grey to infer a 88 motor as 87's are green and 89's are grey. And only 500 were made in 1988, which is another sign. Anyone have an idea on how much hp it puts out? Or what else to look at to confer if it might be the Group A engine?