Wouldnt just be an engine mount issue. What trans would you want to use with the SII? If you want to use the 200, there will need to be an adapter made for that also because the SII doesnt bolt up to it. If you will be using the 4L60E family, they you will also need a custom trans mount. Too many variables to satisfy all customers needs, that would be the main hindrance to producing just engine mounts...