I just checked Glassek and their site is a bit lacking when it comes to info, pics and overall selections. Also prices look like around 20% more than some of the manufactures.

Unlimited does have a huge selection, good descriptive pics and located a few hours from me, but they have not updated their site since 2014 and don't say if some all parts are made in just fiberglass or can also be made in carbon fiber. They do look to have the scoop I want. but only offered in carbon fiber.

Sled City Fiberglass does only up to 1968 models, no aero scoops and looks like they went out of business.