Didn't think it would be as hard as its been to find. I have a few now but still don't know what size or how many i'll run. Will give it another month or two before i make up my mind. If I had to do it angain, the AQ with alum. coils would be awful close. imo i think the dd's will be louder and take more abuse but not by much. Started dig'n my hole, might as well finish. Keep me in mind if you decide to sell yours. thanks