Even with the exchange rate as lopsided as it is at the moment, I don't see $34,900 being anywhere close to £1500

IIRC, that has been on race-cars.com for a while now. But I have no idea about the ebay listing. Seller does have a ZERO feedback rating though.....YIKES

I've never heard of a BDX, but that doesn't mean much. Race-Cars also has a Cosworth type reference that lists all the engine families and it doesn't have a BDX either, but it DOES look like something from the BD family.....so who knows.