The New Westminster Bruins coached by Punch McLean, represented the Western Canada Hockey League at the 1975 Memorial Cup.
Seventeen year old rookie Mark Lofthouse scored a team high 36 goals, and added 28 assists for 64 points in 61 games.
In 18 post-season games, Maxwell scored seven goals and 20 points, and became a top prospect for the 1976 NHL Entry Draft, which was still more than a year away.
Jere Gillis scored 34 goals and 95 points in 54 games and became a top prospect for the 1977 NHL Entry Draft.
Claude Larose was acquired by the Castors from the Shawinigan Dynamos in a mid-season trade, scored 40 goals and 84 points in 39 games.
Mulhern was a top ranked prospect and was selected eighth overall by the Atlanta Flames in the 1975 NHL Entry Draft.
In the OMJHL quarter-finals, the Marlboros narrowly defeated the Kingston Canadians, winning the series four games to three with one tie.
The Marlboros were pushed to the limit once again in the OMJHL semi-finals, as they defeated the Sudbury Wolves four games to three with one tie to advance to the finals.
The Marlboros offense was led by Bruce Boudreau, who won the Eddie Powers Memorial Trophy as the highest scoring player in the league.
Mark Napier emerged as a top prospect for the 1977 NHL Entry Draft as he scored 66 goals and 130 points in 61 games.
Their most recent berth was at the 1973 Memorial Cup, when the Marlboros defeated the Quebec Remparts 9-1 in the final game to capture the championship.
Round-robin Semi-Final Final [1] John Anderson, Steve Bosco, Bruce Boudreau, Al Cameron, Gary Carr, Craig Crawford, Brian Crichton, Steve Harrison, Trevor Johansen, Bernie Johnston, Lynn Jorgenson, Mike Kaszycki, Jim Kirkpatrick, Mike Kitchen, Mike McEwen, Mark Murphy, Mark Napier, Ed Saffrey, John Smrke, Bill Wells, Ron Wilson.