Rob I know you had a 210 Champ. I see no way that boat will run 78mph GPS fully loaded with a 250 hpdi and 25 Tempest. Do you? I have a 1998 203 with a 250 on it and it has never seen 78 GPS evenwhen running a little light. 78 on the speedo yes but not GPS. There is a guy on the Champ board that says his 210 Champ runs 78 fully loaded with a 250 hpdi. Don't believe it, do you?