did the 59-64 Cadillac model 75 use the same commercial windshield as the hearse? rubber the right way has a windshield gasket for the model 75, http://www.rubbertherightway.com/1959-cadillac-restoration-parts-windshield-42227-prd1.htm. if it's not the same, is the only difference in the height? wondering if this could be extended on the sides to fit. Thanks for any help.