Well I need some help figuring this out, first I sold my 96SS 10 years ago and I just bought it back. When I had it I bought a underdrive pulley kit (crank & alt) from SLP which the paper work I have shows them to MBA pulleys. When the previous owner had the alternator replaced they didnt change the pulley over. So first off I think the March 121-08 alt pulley is the same size as the MBA, im trying to figure out what belt I would need? Im thinking I need a Gates K060588.

Also anyone know if the March crank & alt pulley the same size as the old MBA's?