Assuming your bottom of the windshield is the original shape, you are probably best to start with a stock windshield and cut that down. Hopefully the sides and top shape will work with the windshield. You have pretty serious chop, so it may need some metal work to fit a cut down windshield. You can try making a fiberglass mold off your current lexan, and then compare that to stock windshield. Or worse case you can go to junkyard and take your template to find a windshield that has the right shape. It may need to be cut on all four sides. But given the more serious curve at the sides on stock windshield, doubt you will find any newer car to work. But that template trick can work out for rear window glass. Stock rear glass is tempered and can't be cut down. That's the reason many chops just lay down the rear, or use a smaller rear out of different car.