For 85-86 MKI MR2s the 11-12" threaded aluminum body is needed.
For 87-89 MKI MR2s the 9-10" threaded aluminum body is needed
Cantilever slicks - note the proximty of the tire/lower portion of the pin - first event did not show contact between the tire and the pin. Yes, cantivlever slicks deform that much under cornering.