Hi Everybody - This is my first post on this Great Forum " So bear with me" I recently purchased a Japanese 66' Jaguar - And I would like to install a vibramute. Now I know I can get all the parts -Plate,Foam,spring and Plunger - What I need to know is the size of the hole that needs to be drilled for the spring and plunger- Diameter and Depth. And any advise on this matter would be apreciated. Thanks - Gasee