Again I'm thinking about the wheel/tire combination. I measured up the stock wheels and the cragars. The stock wheels are 5'' wide, the cragars have about 2,75'' backspacing and are 7'' wide. The cragars have about 3/4 inch to much backspacing to fit well. I also see the problem that here is nobody around who is willing to balance them on the wheel studs... and the 13'' tires are limited in choice.
Here are some pictures of the car with the original set and the cragars
I saw that there are swiss made remakes of the minilite wheels. They come in 7x15 have offset of 5mm (around 3,7'' backspacing). They should fit very well, even the hub diameter is the right on for the mustang II. They are produced to fit the european Capri. I think with 195 or 205/50R15 tires they should fit nicley.
Here is an example of the wheels on a capri
I saw that there are similar wheels used on pres 73 mustangs:
And i found a picture of the wheels on a Cobra II (perhaps not the same size, but style):
Guys, what to you think? I'm not 100% sure (they are not cheap).