From Mercury Racing FB May 9 2013

A historic event took place Tuesday when outboard tunnel boat drivers Bill Seebold, Reggie Fountain and Earl Bentz reunited for the filming of a documentary on Reggie and their time driving for the Mercury factory outboard tunnel boat racing team. (L-R): Rick Mackie, Bill Seebold, Reggie Fountain, Earl Bentz  and Mike Butler.

Here is some history with pictures  I remember..

Billy Seebold won the 1975 OZ World Championship race in St. Louis, USA.
Driving a brand new “low profile” Molinari boat/Merc V-6  #190

Reggie Fountain  won the 1976 OZ World Championship race in St. Louis, USA.
Also driving a  “low profile” Molinari boat/Merc V-6 #76

Billy Seebold #1 and Earl Bentz #4  racing Seebold boats with the new Merc T4 in Bristol 1979.
Yes..I was there watching the always interesting race.
I have many of my own racing experience from Bristol in the OE/F3 class..1977-1980 and 1982