Mark Coleman's Depot Avionics shop at KALS with shop foreman Mike (didn't get last name) installed GTX 345 on time, on budget and with a smile. Preliminary flight squawk-free, will conduct FAA ADS-B survey as time warrants. Absence of updates to this post indicate all is well.
Thanks Mark and Mike!
ps: Just used:
https://adsbperformance.faa.gov/PAPRRequest.aspx
for FAA survey for the ferry home, all good.