"The opportunity is there for a V8 Supercar to be a two-door," Nash told V8supercars.com.au.
"If we want to do a two-door vehicle going forward then that will be part of it.
"It's all part of manufacturers going forward and being able to accommodate what they want to do."
With the Holden Commodore also facing extinction no later than 2017, V8 Supercars has opened itself to the possibility of changing current regulations to allow two-door coupes to race alongside or in place of the current four-door sedan designs allowed.
If that change is adopted, not only will Ford be able to race Mustangs but cars such as Chevrolet Camaros and Dodge Challengers could join the grid.
"Nothing is granted until you put it up through the V8 Supercars Commission," Nash said.
"Any subject has to go up so it's not mandated that you just go out and do it."
• For more motoring news go to nzherald.co.nz/motoring