Thanks! It's a bit of a challenge since I've never really done that much with Mustangs in the past or a restoration of a department other than my local departments here in Ohio.
I did however have some good progress today in historical searches. Worked out what looks to be the location of the correct Ford dealer today in Idaho that delivered my and Jim Y's cars in 1986. Along with that, I found possibly the cache of ISP radios that were in the Mustangs too with original ISP property tags still on them (no worries Jim, I'll get one for you too!). Have now multiple confirmations from the Boise Coroner's office, the radio firm that sold the GE radios and a US Marshal that have stated that ISP used GE Phoenix UHF radios from the early 80's on. I've also got an interesting note that they may have also used Federal PA 15, 20 and 200's rather than Unitrols... back to the drawing board maybe??
