A Chevrolet dealer should be able to service it, but you will not have any warranty on a car sold into a country not intended. Bin Hamoodah Trading & Gen. Serv. in Abu Dhabi and Al Ain, or Liberty in Dubai and Sharjah (Opel distributors) may have familiarity with the GT if it is sold there. They would be your
best source of product and service. You would be better off buying an Opel GT and then changing body kit if you want a different look (while maintaing some semblance of warranty) than to import.
Opel Arabia