Not a huge fan of MSD even though everyone swears by them (except when it comes to the opti, heard of alot of problems)but I have had two bad coils and a bad box from MSD (and Ironically those where all the MSD products I've owned), all where brand new when I got them and where not functioning correctly right out of the box. Had missing all over the place and if I gave it anything above half throttle it wouldn't go anywhere. Not a huge fan of Accel either but so far so good on the new opti.
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