I have a 72 240z with an L28, Performance Cam, not sure which one though. N42 head, ceramic coated header into 3" pipe, Has 240z distributor with eletric conversion, MSD Blaster 2 coil Has NGK Iridium Spark Plugs gapped to .045" I Just put on tripple webber 45's which don't have any provision for the vacume advance on the dist. I know MSA offers a Mallory unilite dist. But I really don't wan't to spend another $600-700 I am wondering if there are any other Fully mechanical distributors that would work, or if it is possible to modify the 240z dist. to a full centrifual advance. Can any body help me?