I am purchasing shocks/struts for my E30 Convertible. The shocks/struts that Sachs/Boge makes for the E30 convertible are specific to the convertible. I want to make sure that the place I buy from send me the correct shocks/struts that are made specifically for the convertible. So, would like to know if the part numbers are imprinted on the actual shocks/struts, so I can confirm I got the correct ones for the convertible?