That is a great question 289Cobra. I have seen several of the 1/24 scale maisto on eBay and other sites in the dark blue and white but have yet to see a highly detailed version in 1/18. I would assume somebody will produce one.
Greenlight seems to have market cornered in terms of affordable 1/18 scale Mustang collectibles. I would have to think one is in the works? If they put one out I know I will sure buy one. Let's hope so.