Using the 7AL with a street coil defeats the purpose of the 7AL - the bigger coil like the HVC series pulls more current than the Street - strip coils like the Blaster - if you run a 7AL with the smaller coil you are getting the same output of spark as a 6AL with the same coil. I would see no reason the 7AL could not live on the street with a smaller coil or even the bigger coil as long as you keep the heat away from the box, Heat is what kills the boxes usually - also a bad ground or low voltage will do them as they need a solid 12+ volts to survive .