Here's an update: Currently going back-n-forth with Seariders on a quote as it appears they're trying to package import brokerage in with the deal. We'll see how that goes as they're telling me the import info I have isn't correct. So I've asked them to educate me and I'll pass along whatever I learn for future reference.

Here's where I've gotten the best info to date on importing vehicles to the US: NHSTA Vehicle Importation Rules.