I checked out one of those street fire distributors at Advance awhile back and wasn't impressed-looked similar to the Pro-comp junk we tried in my Son's car. A friend of mine ran a DUI years ago and never had any problems. Do know though that their guess at what your combo likes for an advance curve is only a guess. Make sure to get a paper copy of the installed curve from them and suggestions on base timing and a selection of springs for fine tuning. There's many things that factor into what curve works best for your combo.