I'm a no-sunroof guy, mainly for headroom reasons, but finding a high-end sporty car without a sunroof is hard, both because they are rare and because it is nearly impossible to search for "no sunroof." I've found a slicktop M3 now (with a boxster for the open-air driving), but the search was hard so I decided to start a blog to help enthusiasts like me have an easier time finding a non-sunroof car.
So if you are looking for a slicktop, selling one, or have found an interesting listing, check out my blog:
www.slicktopia.com
This is not a business, just a resource for fellow slicktop sports car enthusiasts. Listings are free and any posts are credited to the submitter.
Cheers!