The typical ZBEST comes with 1 Vintage 30 and 1 G12H30. They also sometimes come with 2 Greenbacks.
Yes you can get a ZBEST equipped with 2 Celestion Blues with an upcharge of I believe $175.00 per speaker.
Matchless Clubman 35 Mojave open back 2x12: English G12H30/Celestion Blue Avatar open back 2x12: Weber 30 watt Alnico Blue Dog/G12H30 Tom Anderson Hollow Drop Top Classic Fender Nashville Tele Fender American Deluxe "V" neck Strat. www.heatheredwardsband.com/index.htm