Given the limited mounting space in the new trucks, I would recommend the SR-447HPC2. The size of the radio is about the same as a Cobra 25, so it will fit in ANY TRUCK! They are also really well built, have that "Big Radio Sound" Great Modulation. The Power after tuning can be 75-80 watts.
As for antennas, regardless of using one or two, I would recommend the SR-A10 Trucker, they are by far the best performing antenna for transmitting and receive. We test them against, Wilson, Monkey Made, Predator as well as many others and the SR-A10 outperforms them all.