Designed to provide maximum ignition performance and easy installation at an affordable price. Now you can upgrade your outdated points or stock electronic distributor with a performance proven distributor that features the patented Ignitor II module and a CNC machined 6061 T-6 polished billet housing and deck.Cpmes with a factory configured performance curve with additional spring sets for custom curving. This model has no vacuum advance. This may not clear some aftermarket Intake Manifolds.