I converted my 67 cuda push in type rubber over to 68 and used the stainless steel trim. If you can get your hands on the stainless you can use a 68 and also maybe a 69 gasket. The main objective for me was get rid of the push type rubber. I have been looking for awhile at pictures of 67 cudas with push in type rubber and have NEVER seen a completed system like it came from the factory. The corners and center piece are missing or there is not lock strip at all. It needs to have the lock strip to hold the glass properly and keep it from leaking. You have to install clips to retain the stainless trim.