13. To spark the fuel, we chose a ready-to-run MSD billet distributor (PN 8360, $280). With a vacuum advance, we will get better economy, which is even more important these days. The housing features an all-billet 6061-T6 aluminum design for superior accuracy, and an oversized steel shaft that is QPQ-coated for low friction. Sealed bearings at the top and bottom of the distributor make sure it all stays steady, which equates to accurate spark delivery at any rpm.