In my years of programming Kenwood radios from 450 down to 440, usually the only thing that requires tweaking is the VCOs. They'll take the frequencies. I ran a TK7180 and 8180 mobile and they worked fine on both VHF and UHF ham
Chris WB5ITT
Hi Chad, I have an 8360 that I use as a UHF base station radio in my shack. The CPS complains when I program "unsupported" frequencies, but so far I haven't had issue as long as I stay as high as possible. I haven't needed or tried to program in something like 432 mhz for example.
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The other issue I ran into with my 8360 is the wideband receive filter can go bad, making the radio deaf. Something to watch out for if you suddenly stop receiving audio.
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Good luck with your project!
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Gordon K8DIY
Chris Boone WB5ITT