Car not running what is should, need help.

Iam curious to hear your track results as I use an older MP orange box (before they were made in Mexico) and I also use a stock vacum advance dist that I do not use the vacum advance and I recurved the dist for full advance by 1800 rpm's in my sons 383 Dart. And it has worked fine since 1998. Its run 12.30's @ 110 with a basically stock 383 and bolt on's as I did not think it would run that good so I am very pleased with the low buck ign I have on it. I have thought of trying the MSD but really dont think it will help much if any on it. So I will be interested in your track results. Oh and good luck. :thumrigh: Ron