Hello Bag,
Welcome to the group!
How much do you know about these cars? If very little, not only do you have a bit of a learning curve about the cars, but you also need to know enough to select someone to do a PPI for you. If you don't yet have a lot of knowledge--it may be useful to "kiss a few frogs" throughout the northeast (there's always plenty of them) to learn more about them.
Follow BaT; the MBCA Star; Hemmings, eBay, Craigslist and more. Find the ones for sale in and around NY, and Philly to Boston. There may not be any today, but maybe tomorrow. Contact and maybe even pay a visit to Dave Tobin's Tobin Motor Works, just upstate in Horseheads, NY.
https://www.tobinmotorworks.com Dave has many of them coming and going. Hatch & Sons in Hudson, MA also has Pagodas coming and going.
https://www.hatchandsons.com Don't forget Brian Peters of Motoring Investments in San Diego. Yes far away, but he's made a market in Pagodas. Top price for top quality cars.
Remember the old mantra, there's nothing more costly than a cheap Mercedes. Set your pricing and expectations correctly, as well as your future investment (they ALL need something).