Congrats on the purchase. Not too many members here in MD. My car is in Eldersburg, on the other side of B-more from you, while I'm overseas. I actually had my aero side skirts done at Jeff's body shop just down the road from you and they could probably do the reflectors.
I think there are still a set of RPI cans for sale in the classifieds. check
HERE.
I'll be home at the end of next month and plan on going to the Cars and Coffee in Hunt Valley on the 28th just north of Baltimore, you should try to make it up there. There is one in Annapolis too, but from what I have seen in pictures it doesn't compare to the Hunt Valley meet. Theres also a BMWCCA autocross the next day in Waldorf.