Might not help on your 1st gen, but I used AMD on my dad's 70 Camaro, and was VERY pleased with the quality and fit of the glass.
Josh Campbell- Pushing the limits of my HOA since 2011
71 Firebird- 455, Ridetech front suspension.
67 Camaro RS/SS clone, Speedtech front suspension, coilovers, soon to get LT1/T56.
82 Z28- cheapie beater, soon to get a 406.
66 Mustang coupe- 393, T-5, sold.