i have been scanning ebay long and hard. MikeDE, does your alpina pop on like our more recent cars or is it a thread-on. I havent been able to find much info on whether or not there are adapters out there to use the older thread on style onto ours. I would imagine not, being the thread-on style is probably a smaller diameter. MikeDE, you wouldn't happen to have an easy photo on you to see what it would look like? thanks!