MG? Must have been the Clenet. They were however based on late 70s LTD IIs or Mercury versions. Some used Town Car or Continental grilles. Smaller versions used MG doors, glass, and trunk lids. The larger ones used VW Super Beetle glass and doors, but all had Ford underpinnings. I remember applying for a job there in Goleta and seeing the half disassembled Fords in the back of the shop. They would sell those to body shops.