This dash cover is custom formed to the exact shape of your original dash. It is installed over top of the original dash, and is held in place with silicone adhesive (provided). The installation can usually be completed in 30 minutes or less. No special tools are required, and no original parts need to be removed. Fits 928 (1978-1989). Please specify color, A/C, and speakers when ordering. Item will be shipped directly from the manufacturer and please allow 1-2 weeks for delivery.