An ascMcLaren forum for 84-86 Capri and 87-90 Mustang based cars modified by Automotive Speciality Corporation, a Division of American Sunroof Corporation. (no affiliation)
I posted a new pic in my album (After spending the better part of an hour trying to figure out how) showing the engine bay and the plaque on top of the intake that says 'asc Mclaren'. It's the only one I've found, or heard of, that says that instead of 5.0 HO.
The steering wheel says 5.0 SC and so do a couiple other places and the floor mats and the center caps on the wheels. All 5.0 SC.