I have never searched for an adaptor for any of my cars. I have allways dealt with an offset that was not ideal or found rims that were. If you are not going to beat on the car and the cast ones are all that is available then all I can say is that my friends set did not fail. He evetually went with an 8 1/4" rear. If you can restrain yourself and check ALL the nuts they will work as a temporary measure. Remember that you are starting with 7/16" studs and small bolt pattern. Not a stong arrangement. I would get wheels that had the correct offset and use 3" studs with wide tires.
