I have a fiberglass back cap built by R&M fibersglass,it waa built to go over the stock back top cap and cover the back windows.
Its new,never used and i will sell it for $300,same thing i paid for it.
Its no longer made,but i think R&M is still in business.
Located in Bainbridge Ga,its inside,not out in thr weather.
352 538 3435