67FE fastback Speedy, I looked at the you tube of the building of the Mustang. I know it's not orginial but If this is the car you are racing, Sorry, you nuts.
Way too much time and money spent to build this beauty. Find a cobra kit like a Backdraft, Factory Five, Superpreformance, and race that. You wreck this car, GT and you will need years to repair if you do. If money is no object, go racing.
Side note If you are serious about tracking this car, there is a kit for helping the suspension and lowering the upper control arms for better handling. Last thing is Joyride has a good idea about running a stroked windsor motor in the 393 to 408 size or buy used Nascar parts and build from there and save the FE motors for car shows. I did everything myself to build my first FE motor with shebly heads and block and the cost was 13,000K. Motor number2 is in the basement and will be in the 20K range when done. Bigger motor, TWM 58MM carbs, and special parts with a dry sump setup. IF I was to rethink this, I could have built a stroker windsor for about 10-15 grand and save my Shelbys
Good luck, keep 4 tires off the run offs, 2 is ok.
Rick L.