turbo?
#7
start with one of these and either modify the tubing to fit your truck or have a muffler shop make you new tubing
http://cgi.ebay.com/ebaymotors/Ford-...QQcmdZViewItem
http://cgi.ebay.com/ebaymotors/FORD-...QQcmdZViewItem
http://cgi.ebay.com/ebaymotors/Ford-...QQcmdZViewItem
http://cgi.ebay.com/ebaymotors/FORD-...QQcmdZViewItem