you'll need a 6 volt starter for a key start vehicle. If you get a starter for a 12 volt vehicle you'll have a missmatch between starter and ring gear on flywheel. You'll need a starter switch designed for key start or a push button to power starter seleniod to engage starter. You may want to post this question in electrical bay also. you will have to run a hot wire from key switch to push button then to starter selenoid.