Mad Mike's SBF is the way to go if the budget allows. Just for information (2) SBFs in kit form that I like:
1/25 scale - AMT '67 Mustang or '69 Cougar Eliminator
1/24 scale - Revellogram 65-66 Mustang/Shelby
I've used the 1/24 scale Revellogram in 1/25 scale project and have been happy with the results.