Window glass guide rubber for sedans?

Hey guys:
I was wondering if the flocked, rubber guides that the door glass slides up and down in are available anywhere new for a 4dr sedan? How do you remove and replace? I read through the FSM but it's not clear with all the models being jammed together. I'm thinking the pieces for a 2dr sedan would be the same since the door is essentially just stretched.

The pieces on my '68 Valiant that sat outside it's entire life are decayed...the ones on my '69 Dart that was garaged are nice. Go figure. I have some in a set of used doors that are "better" but I don't want to destroy them trying to get them out. Thank you.