For everyone who's had any questions about the new 5.0 SLP Loudmouth catback, here's the install - so take some time and check it out http://www.stangnet.com/Tech-Articles/SLP-Exhaust-Tech-for-5.0L-Mustang.html
Like I said in tech... Great write up, car sounds horrible. EDIT: under a load it sounds much better, but like a glasspack.