I have a ProChamber, and at first the drone was worse than I liked. If the drone really annoys you, put some sound dampening material on, like I did. The drone is still there, but significantly less and there are lots of benefits to using sound dampening. Suddenly, you'll hear your stereo better, road noise is alot less... Sometimes I do actually enjoy the stereo over the V-8 rumble, but only sometimes. There is a slight weight gain with adding the material, but it's insignificant. Just a thought. I am really happy with my ProChamber, having had it on more than 5 years now. The rust problems you may hear about shouldn't be a factor if you take normal care of it, especially considering where you live. I've lived in the midwestand eastern mountains where they use plenty of salt and other snow melting chemicals and with normal care, the pipes won't rust. Of course I only drive it when I have to in the winter. You may also get fooled initially by a loud "rushing" noise that will sound like a leak after you've had it checked out and find no leak, get used to it. As you have stock exhaust manifolds, you may need to change the studs on the passenger side from the stock ones (with an unthreaded shoulder) to full threaded studs. It's not really hard to do, if you don't, the ProChamber may not seal up fully and it will leak. Make sure you use the stock gasket, preferably buy a new one from ford. The one you'll get from MAC isn't as good and may give you trouble sooner or later. The drivers side is a ball and socket joint and won't trouble you. Make sure you have long extensions and a couple of swivels (and patience) to get to the manifold bolts.
it just got put on,s o i haven't got to fire it up yet. as far as power, i'll let you know in a couple of hours 
