Re: 70hp thermostat compatibilities? Home › Forum › Ask A Member › 70hp thermostat compatibilities? › Re: 70hp thermostat compatibilities? dan-in-tnUS Member - 1 Year (includes $3 online payment fee)Replies: 961Topics: 78 July 27, 2018 at 2:13 pm #80208 Two different style cylinder heads. I’ll call you. Be happy to explain to anyone who is working on one! Dan in TN