You can make a hardtop out of a Ford Mustang hood or any other hood if you want.
View attachment 726573
This is the Miata that I race in and the solution to keep us protected from the environment was to weld a mustang hood to the car.
Honestly, if your looking for a track car, the mx5 is the best entry car into the world of tracking cars. A track car is best used with no care of looks. You are going to learn a lot of lessons driving it. With lessons comes mistakes which if you care for looks you chose the wrong hobby. Try Hard Parking if you care for looks.
Second, replacement parts are cheap for the mx5. This is a big reason why track rats gravitate towards the mx5. It is a solid performing car for the price and pound per dollar it will be the most rewarding driving experience.
Third, yeah about that driving experience... it will teach you so many lessons while you rev the crap out of it while staying flat footed on straights because you are going to get passed by every car on track on the straights. At least until you learn how to fully utilize the car. It will teach you how to use momentum to your advantage. Once you learn to drive the car in manners that use all of the strength of the car, you'll be ready to step up to the next level.
Fourth, searching for more power? That is the absolute last thing you need to throw money at in the MX5. Throw it towards suspension, Tires and brakes. You will be very surprised by what you can do on track with a 90 whp car that has been finely tuned with a good set of tires and suspension work. Added benefit of only having to change brake pads if you get a mx5 with just standard brakes from the 1.8 liter or 94 or later cars. All that needs to be done is get a set of raybestos st43 pads for the car and it will last all season of tracking plus stop amazingly. At this point the car should be hitting well above its power grade and you'll still be frustrated about getting passed on the straights, however after you taste the first car you pass in a turn, it will become a drug and make you realize that you will have better driving technique. Which leads into...
Fifth, decision time. You made mistakes, you have hit tire barriers, the car has been through the seven layers of track car hell. You have honed your driving technique, you have put a minimum amount of money into the car so you can save up a little sum knowing your ready to upgrade to more power. You will be at a big decision point with tracking cars. You could put more power into the mx5 at this point, or find another or find a car with more power to track. You have made all the amateur mistakes you possibly could have at this point so a nicer track car can be maintained much better at this point. The decision is yours, but before you make that decision along with the decision before I started this little rant.
Sixth, what do you want? Track time or garage time? I opt for track time. In order to appease track time the less money I can spend on maintenance, upgrades, repairs, the more track time I get. In doing so, I have tracked this car with the least amount of upgrades I could use; and as many fsctory partd i could. Something will break and being closer to fsctory components i csn gdt replacement parts a little easier from the local parts store versus the internet page I got a oh so great deal on a one off suspension bit that broke on the car during the first driving session of the day.
This is why racing a mx5 turns out to be the most cost effective way I get track time each year.