Bolton was much closer to Brighton in those days!! Check out the programme for the directions/mileage.
https://www.flickr.com/photos/75238685@N02/sets/72157629858858569/show/
In the North Stand about a quarter of the way down just the right of the goal as you face the pitch. Remember it vividly.......I had to ring my father (from the Club Reception) after the game, to come and collect me as I could barely see to drive - my glasses having fallen off and been smashed...