I have used the MSD digital 6 on my 91 Mustang. It has a built in boost retard for nitrous, a 2 step rev-limiter, a high end rev limiter, and some other nice features. It was also seemed to be easier on the plugs then the MSD analog boxes.
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-1993 Mustang, 900rwhp 03-04 cobra based 4v swap, full Griggs setup, project underway
-1994 Ranger w/ 427cid windsor (daily beater)
check it out!
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