Thanks all. You have given us some things to think about and consider.
To answer a few questions, the contract is directly with Motorola. Primary dispatch does not have access to the airband in their consoles and as such cannot patch. We provide extensive training and our end users are well aware on what band (700/800, UHF or VHF) they are operating their radio on. They are capable of switching banks and channels when directed to do so or when entering another area where those are the primary bands. There is bi-annual training on the subject of radio's, radio operation and radio procedures that all end users attend. We do have access to interop channels, however external agencies are either not willing or trained to switched to those channels so this is more miss than hit.
So you're using Kenwood platform but have a contract with Motorola? Some further explanation would be needed here if you're so inclined so we can all understand better. Is it a State contract?
Regardless, you'll still need a separate AM aircraft radio, doesn't matter who you go with... Kenwood, EFJ, M, Tait, Harris, etc. to answer your original question and not derail the thread with stupid nonsense.
Hobby forum is not a good place to ask advice on PS radios and systems. You need to go with the best support, best taxpayer money spent, best bang for the buck. Motorola makes excellent products. DO not like their business ethics, never have. Some feel the same way so it's a catch 22.
I do not know of any Motorola salesman pushing or willing to sell the 8000 line to a new account. The NEXT is the generation going forward, that's just the way it is. They are in the business to make money, advance technology. They are not going to push or continue to support 10+ year old radios/platform forever. I would seriously consider the NEXT line if you are interested in them, especially if new radios are going to be phased in over time.
Hope this helps. Good luck!