Sonnax offers AL-WA-2, an aluminum stator cap/bearing adapter for the impeller side of the stator. The AL-WA-2 is designed to adapt the late-model impeller bearing AL-N-1 for use in early-model applications. Machining of the OE impeller hub is required to accept the AL-N-1 bearing. Alternatively, the OE impeller hub may be replaced entirely with the AL-90-3G impeller hub.