CMC used 2 different windshields - a low one on the sSpeedsters with side curtains and a taller one on the ones with windup windows. Ya might try CMC's successor - Street Beasts in Florida. They no longer produce the Speedster but still may have some in stock or a source. Vintage Speedsters in California is another source. Shipping to Poland (?) ---gulp! Might be worth a call/email to Rusty Tubs in Atlanta, Georgia too. A real Porsche Convertible D windshield frame and glass can be made to fit too but if ya have the low bow Speedster top it will require new bows and a new top (its lots of work)