I found the same thing on my 58 truck. Very large difference in price, it pays to shop around.The installed price almost what I would pay for the windshield . They had a tough time installing the windshield, two men for 2hrs.I gave them a good tip, they earned it. I had a similiar problem with a 54 truck,I broke one windshield , the installer broke one, the third one worked fine. The 58 was much more difficult than the 54. The wrap around corners were a bear. Convinced me to use a installer next time. Good luck.