i have been contimplating getting rid of my stock which is still in great condition but never really the SP or PE due to the size of the cone and stuff.. B&b is too pricey on my n/a for power.. but this looks fantastic sounds even better then i thought it would be and is what i want for the money.. i would definetly buy the resonators though.. AS soon as you start making them let me know, i will 100% be interested in buying one. Now if only you made it for the 2+2 also. ??