1996 Infiniti I30 starter 8 tooth vs 10 tooth

[mountainmangeorge]

hello, I searched your forums and online mechanic in both the current and archived sections. I have a 1996 Infiniti I30 with a dead spot on the starter. It was starting after a few bangs on it, work for a while and then quit again. I pulled the starter to either get it rebuilt or replace it. When pricing a rebuild at a local shop or the cost of my just dropping in a new one from most parts stores, the prices were about the same. Of course, a dealer part was much higher. Apparetnly, Infiniti switched from a 8 tooth to a 10 tooth starter because they found it to be superior. Also, they will only give you a 2-3 year warranty on the 8 tooth vs a lifetime on the 10. So question is....Is the 10 tooth interchangeable for the 8 tooth or would I have to change the fly wheel as well? If so, is it worth changing the fly wheel? thanks for all your help