Lexan are obvioulsy lighter, but the 3rd gen T-tops had a problem delaminating, GM issued a bulliten stating that any customer who came in to a dealer complaining of the lexan delaminating (spots of the protective coating flaking off) that glass ones would be issued to the customer to replace the lexan ones. I like the look of the glass ones, they were less squeeky, but due to their weight I never raced with them and in the summer time whei i took the t-tops on and off it was easier to place the lexan ones in the bag, lexan was lighter so they didnt rip teh bag up as much either.
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