Grab a cross section of what you need and then take a look through this universal list here
http://www.soffseal.com/store/main.aspx?p=PictureListBody&c=UNEXI bought 50 feet of E145 last year. Fits all the doors on my 1978 B. Almost exactly the same shape and structure as OEM, although in my opinion it is a little on the floppy/soft side. But for less than a hundred bucks, and the impossibility of finding sedan and wagon weather strip, I'll take it. The only real problem is you have to punch the clip holes yourself and that's a time consuming job. Money or time, money or time
I think they'll send you a foot sample if you want, or even if you have to pay for it you're talking less than 10 bucks