Radiator Hoses/Cooling May 08, 2020, 08:55:04 AM This seems like kind of a dumb question, but I can't seem to find the answer and thought I'd double check. Should a radiator hose kit meant for a 1986-1993 5.0 fit on a 1986 Thunderbird 5.0 SO? Also what heavy duty thermostat would you guys recommend for replacing my stock unit? Mine has worked flawlessly and I've never had any cooling issues, but I'm in the process of tearing my engine down and doing some mods so I thought I might as well buy a new heavy duty one. Thanks!