A few clarifications on the history of rules:
The line of scrimmage for a convert
Prior to 1956 - 5 yard line (TDs worth 5 points)
1956-1974 - 10 yard line (TDs increased to 6 points in 1956)
1975 to present - 5 yard line (2-point convert introduced to CFL in 1975)
Penalties on converts
Up until 1969 - if the kicking team committed an infraction on a convert attempt it forfeited the convert.
1975-1977 - defensive pass interference on a 2-point attempt resulted in automatic score of two points.
End zones changed from 25 yards to 20 yards starting in 1986. BC Place was built to accomodate the 25 yard end zone but someone forgot that a buffer was needed between the field and the wall. As a result, BC Place only had 20 yard end zones starting from opening day in 1983.
Grey Cup Bowl Games
1950 - Mud Bowl
1962 - Fog Bowl
1965 - Wind Bowl
Jim Van Pelt only played in one Grey Cup game and that was in 1958 (he scored 22 points in that one).