If it's a vibrant red feature vert then it's a '92. I sold mine. There is a vin tag on the core support that has the word "Feature" stamped on it. You can see it between the back of the headlights and the radiator..drivers side. I could read mine without taking the bumper cover off.. Also should decode the vin on one of the Feature Convertible websites. Google that since I don't remember the site.
You'll hate the roll bar or cage. Really uglies up the car in my opinion. Do the Maximum Motorsports full length subs with seat braces. Put any other kind on and you'll be banned from Stangnet for life...lol. Seriously, there's not even a need to look at any others. But have someone that knows what they are doing weld them on. Full weight on the tires.