Yes they are. Bolts and dowel pins locate the flywheel. After the bolts are out the flywheel may need to be loosened from the crankshaft. A deadblow hammer will get it moving, and it is heavy, and it will mash some fingers. Are you having fun yet? Good news? It will only go on one way. Keeps the timing marks lined up. Keep the 6 volt flywheel with the 6 volt starter. Teeth count is different and the "pitch" is to. Use the same size clutch and presser plate when you need to replace them.
