Msd 7al-2

I had a 6a box in the Duster when I got it. Worked great.
I just went with a 6al for the rev. limiter.
Never had any problems with either.
I banged the Duster off the 6400 chip this past weekend.
Went up to a 6800 chip. I was shifting it at 6400.
I recomend the MSD boxes.