Looking for a part # for a Chrysler electronic distributor (no after markets) for my 318 LA , mostly stock, small cam/ 4 brl street driven cruiser. Where any part numbers better for performance/mileage. Was thinking of getting one from rockauto (they list OEM part numbers). Did the 340/360 electronic distributors have better advance curves/weights/vacuum advance canisters ? Or were all of the electronic distributors all about the same?