All of us have, at one time or another, labored through the policies of any given online supplier site to place an order. I'm sharing my recent experience with https://www.britishparts.co.uk/ who had what I wanted but, I learned, does not ship to the USA! But just about anywhere else, including (with all due respect) even Zambia! Now then, I don't know how many Jags are in Zambia but whatever the case, after filling in all of their forms... nothing worked... never mind after skimming through all of their advertising about how they ship around the globe, even picturing FedEx planes, I couldn't find mention for shipping to the USA. I couldn't use their "contact us" form because it wouldn't recognize a USA based phone number and so you could hit "send" til the cows came home... but it wasn't going anywhere. So I ultimately found an email address for "sales" and dropped them a note. Of course I got the usual terse British reply: "Thank you for your lengthy email; we do not ship to the USA."
Point in all of this... after hunting/pecking for the right parts, getting your basket filled... take a pass because w/ British Parts it'll be all for naught.