ok i may have asked this question before but. i want to know what opti distributor is the best for a 1993 z28 camaro non vent. should i jsut stick with the oem, or get the summit opti, or the msd opti. what are the difference will one out last the other. will one give more horsepower. i know the price difference ranging from $200.00 to $600.00. just curious one what brand you guys are running on your car.