Dead washer pump

[Justinjob]

The washer pump in my truck is dead. Over its 30 some year life span the internal diaphram has rotted-and it seems that you can't replace that part of the pump. I was considering buying a new pump from LMC but am a little hesitant to spend close to 40 bucks on it. I've thought about looking at the local junkyard but haven't yet, I kind of suspect I'll just find more bad ones out there-but you never know I guess. Then I was thinking, hey-I wonder if that washer pump is unique to 67-72 trucks or if it was used on other later model vehicles, I may be able to find a good one from a newer vehicle out in the yard if that's true. Anyone know if that's the case or not? Or, any alternative ideas??