These were CCM's best effort at making a high-quality lightweight bike...
The CCM Silver Ghost was the second from top of the line road bicycle and the next lower model would have been the CCM Mistral. I report this information from a CCM Dealer's Price and Parts manual that I was given a few years ago.
From the early seventies to the end of its run, the CCM "Tour du Canada" was CCM's top road bicycle. It sported full Reynolds 531 frame and fork set, complete with Campagnolo forged drops, front and back. The Tour du Canada frame set's suggested list price was $347.50 for the frame and $110.00 for the forks.
Both the Silver Ghost, second from top of the line and the Mistral, third, had near identical frame set. Both were Reynolds 591 straight gauge tubes. The frame's suggested list price was $45.80 with the forks priced at $12.40. These numbers are identical for both the Ghost and the Mistral.
I believe the "Tour du Canada" was a special order product prior to 1975 but that is only a guess. I am pretty sure that the model was offered from 1972 until and including 1976. If anyone else knows better, I would appreciate a heads up on the comment.
You can have a look my
CCM "Tour du Canada, if you wish.
Two bicycles that preceded the Silver Ghost also had Reynolds frame sets. I have a CCM Westonia from the mid fifties and a Formula I from the late sixties and both of them have Reynolds 501 tube sets.
I hope this is a help and I do like your Silver Ghost. Good luck with the project.