Welcome to the Forum from NH.
Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.
I hope that you will become a participating member in the Forum's discussions.
Pics of the truck, please.
The Bose system is an entirely different animal than the non-Bose system. Differences include the head unit, the amp, and the speakers (impedance). Changing out just the head unit to a Bose head unit will not result in a better sounding system, and in fact, it will probably sound worse due to amp interconnection and speaker impedance mismatch issues.
Either stay with what you have, or change the entire system to an aftermarket non-Bose system, which is what I did. But, if you want the factory look, then leave your current system as it is.