The FR500 sounds the best, best performance, and is biult to last from Ford themselves. It was designed for a million $ prototype called the ummmmm..... FR500. It was designed to give the most performance. Did i say it sounds wicked?
BTW.... The FR500 system is back ordered through Ford till at least the middle of June.. There's been numerous previous promised dates by Ford so don't bank on June either.:cryying: