Hey guys, I want to order 2 Interceptor gauges, but I'm unsure about exactly which one to buy. on interceptors website, they have the PT for all 2007-older gm vehicles, and CN for newer CAN style. my truck is a 2007 NNBS, which one do I order? Also, I see than Allen is a authorized dealer, is he cheaper than buying direct? I will send him a PM but if you guys could help me on which is the correct one to buy that would be great. I will be installing them in a dual a-pillar pod from RPMoutlet.com Thanks guys!