Was John's 137 record under Canadian sanction? APBA shows John and that
boat for a Mod U class record of 135 in 1983 in Florida, but no other record.
It gets confusing when a hydro is used to set a class record for straightaway
in what you normally would consider a tunnel boat class, F1, Champ, Mod U.
Hydros are legal boats in those classes, they just don't compete with them on
closed course competition. I would guess they entered the kilo runs in those
classes rather than do the "special events" thing.
For true tunnel boats, I see a 143 by Todd Bowden in 1996 for Champ in APBA
and a 159 by Guido Cappelini in 2005 for 2.5litre F1 in UIM.