I have used the MSD in years past with little problems, this has been in a car that only travels 1/4 mile at a time
I have had a Crane in my Mustang which has seen both track and street, I think I have had this HI-6 box for about 6 years or so without any problems, I would buy another. Plus I was able to buy one with a blue anodized finish, gotta look good too!