Hi looking for a left door weatherstripping for my 1978, hopefully a factory one 3874-59-901A. ALSO wondering if this site is safe to order to the USA Motorstorex : http://www.motorstorex.com/mazda-weatherstrip-lh-door-rubber-b1600-77-part-number-3874-59-901a
I bought a set of these. They work, they seal, and the price is OK. Shipping took it's sweet time and it was hung up in customs for a while but it did get here in one piece.
They are not as 'molded' to the shape of the door as the factory ones are. They're more round overall in shape but they do work. Use a deadblow hammer to knock them on, and a little WD-40 if they're not cooperating. The seal is THICK, and the seal kinks down at the front of the doorjam since it's not molded with bends. And it's hard to close the door, but it's getting better.
And it seals real nice. I don't get water in my eye in the carwash machine anymore.