Well, I installed a mild lunati cam (51014), 218/.500 (intake) and 226/.510 (exhaust), lobe separation is 112 and is design for 2000 or 2500 to 6500 rpms. From my research our cars need a lobe separation from 112-116 to get good idle qualities. The lift matches the flow rate of my AFR 165s and the rpm range of the Edelbrock Rpms. The cam has good sound and torque characteristics with a damn good lump. If sounds is all you want I've read that the B303 will give you that but I've also read that is all it gives you other that tuning issues - it has a lobe separation of 110. Neighbors now when I'm coming and going. You will have idle issues but with patients and some fine tuning (get a multimeter) you may get it right. I plan to purchase the Tweecer but at this time I do not have a home computer, better yet a decent home computer, that can handle the requirements of the Tweecer. I know, I know I need to get up to speed with technology. But I've been out of the Mustang business for 4-1/2 years, which is when I wrecked my 95 Cobra. I rebuilt the car and now ready to have some fun. Peace