However, there was an alternative offered for sale: a Dealer Special Order (DSO) kit. Unlike the M81 Mustang, the DSO had a much more modest price of around $1,500, but it didn’t spur a mass ...

where Ford would send dealers an M81 kit version, and they would assemble it. Unfortunately, the dealer program didn't get ...

Somewhere in the middle of the Mustang pack is the 1981 Fox-bodied M81, which Ford produced in conjunction with McLaren Engines, who would soon become the supercar building McLaren Automotive.