I have recently purchased a MSD 6A from a friend. (He had it in a 89 Sub.) Almost brand new I bought it for $40.Still with the original Box. I know it still works but am concerned about the reliability of the product. My Dad is trying to talk me out of installing it. His argument is that the stock HEI is best left alone. What are you opinions about it? (I already checked the SEARCH for info and found some Pros-and-Cons) I have and 83 K5 350, stock ignition and coil, Excel wires & distributor. Thanks, KEN DANGIT it's not a bronco!