We have a 1983 Stingray 195SVC(runs great) right now we tow with a 1999 F-150 extended cab V-8 Auto 4X4. Does a great job but now we are looking at a 2006 Hummer H3(prices have fallen) H3 is loaded BUT...has the I-5 for a motor. Every where I have read it will tow boat but brakes may be a...