Snacol - The website is
www.pro-50.com. But, I wouldn't buy it from them directly. Check some Mustang magazines as a lot of parts guys carry these. Typically the price will range from $179-$189, just don't pay the $209 listed on Pro-5.0 website.
I'm going to finish the install tonight and let you know how it goes.
Scott, SPF#1230