GOOD NEWS. . . . The PICTURE UPLOAD FUNCTION IS WORKING !!! The tech folks at the parent company have been able to remedy the issue. You can upload pictures once again. Thank you for your patience.
If that is the original reverse entry starter it will not turn the engine in the left rotation since it was used on the original right hand engine.
Sierra # 18-5603 no core required.
Sierra # 18-5908 Delco rebuilt. Core required.
Remember, a rear entry starter is opposite the engine rotation .
Eg: a standard motor uses a reverse rotation starter and a reverse rotation motor uses a standard starter