SF figure's feet are oversized and will actually fit some wrestling figures depending on the company. Just recently I found that the knees from the TNA Figs by Marvel Toys have the same scaled/type of joints as Street Fighter. I was able to stick the lower legs on to a Guilde body without any modding.
But wouldn't the 6/7 inch problem still exsit? (well mostly for women
But I think ml feet are too small for a werestling figure.
Namor
Weapon X (Wolvie)