Get a service manuel for your year of "E" body. Some of them are all inclusive and some were two volume. In the two volumn ones the 2nd book is for the body and one chapter deals with what you're looking for.
The one vol. book has the body sectiion in the rear. These books used to be available in CD form. I don't know the cost of the CD but the books are a little expensive. You won't regret getting one though - they are like assembly instructions. Sorta like a darn big model car.