Glossy was an available option, but not the product line wide choice.
The top of the line Late 2008 MacBook Pro (not Unibody) included: > An antiglare CCFL-backlit 17" widescreen 1680x1050 active-matrix display (a glossy display was offered via build-to-order at no extra cost, and a higher resolution LED-backlit 1920x1200 display also was offered for an extra US$100).
https://everymac.com/systems/apple/macbook_pro/specs/macbook...