Bully Dog A-Pillar Pod Mount Features: Cleanest Install For PMT Very Simple Installation Can Be Matched To Any Interior Color Provide Excellent Viewing For Safe Driving Custom Designed For Best Fit And Finish Includes Speaker Cutout Height: 6.000 Width: 6.000 Length: 33.000 Weight: 1.50 lbs Fitment: 2013/GMC/Sierra 3500 HD/WT Standard Cab Pickup 2-Door/6.6L 400Cu. In. V8 DIESEL OHV Turbocharged^^2013/GMC/Sierra 3500 HD/WT Standard Cab Pickup 2-Door/6.0L 5967CC 364Cu. In. V8 GAS OHV Naturally Aspirated^^2013/GMC/Sierra 3500 HD/WT Standard Cab Pickup 2-Door/6.0L 5967CC 364Cu. In. V8 FLEX OHV Naturally Aspirated^^2013/GMC/Sierra 3500 HD/WT Extended Cab Pickup 4-Door/6.6L 400Cu. In. V8 DIESEL OHV Turbocharged^^2013/GMC/Sierra 3500 HD/WT Extended Cab Pickup 4-Door/6.0L 5967CC 364Cu. In. V8 GAS OHV Naturally Aspirated^^2013/GMC/Sierra 350...