I am on the edge of ordering a Magnaflow X pipe with cats, but I don't want the dreaded drone at 65 mph in 5th gear. My cat-back will remain stock for now. From what I have gathered from previous posts, it is the cat-back that determines the drone? Please let me know ASAP, as I would like to order one soon. If it makes any difference, I have the 2v KB blower. Thanks all.