Polycarbonate: 1/2 the weight of glass and 260X stronger! 911 OLD: '65-'88 911 (993-964): '90-'98 (rear also) 914: '70-'76 928: '90-'95 944/968: '83-'91 (rear also )  962 RACE SHIELDS 986 BOXTER 1ST GEN: '97-'04 GT3R (996): '99-'05 997: 2006 CAYMAN: 2014 (rear also ) CAYMAN Gen 1+2: 2006-'14 (rear also ) 991: 2014 996: '99-'05 (rear also ) 997: 2006 (rear also ) Please fill out all information so we get you the correct windshield. If the make/model you have is not listed, give us a call.  For side windows please call as well. 1-800-554-7527 All of our windshields are handmade and precise. Our standard oversize is 1" around the windshield. 1/4" is only offered for front windshields and only rear windows are offered uncoated. Our current lead time is 4-5 business weeks but lead times may vary. Someone will contact you if lead times change.