Manual Disc master cylinder

[Andy4639]

Originally Posted by 54blackhornet

ANDY we aren’t interested in a part number for later vehicles. We are interested in the proper cylinder for a 71/72 truck with non power disc brakes l Appreciate your project converting from drums to disc but totally different topic. As confirmed by the above information, there are two different cylinders per GM’s engineering

True, but if the stores don't carry it then what you gonna do? As so many of us have posted that they all say one master fits everything for those 2 years, C-10,20,30 manual are power doesn't matter.
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I'm trying to give you all info to get what you want. If you look at the part it's got the larger opening for the longer rod as what manual brakes use. I just got back from installing the master on the booster and it worked perfect.
Just because LMC say's it's 71-72 doesn't mean it was. They could have done what I just did and now use it as the stock parts. I'm not saying they do are not but I wouldn't be surprised if they don't.
If LMC can get it then I would think any parts store could so why don't they list them?