I really appreciate all the help
![Clapping! :clap:](https://board.marlincrawler.com/Smileys/marlin/applaus.gif)
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@Flood, exactly my BMC is the "Big Bore FJ80 Brake Master Cylinder" that Marlin Crawler sells. @jgraham I'm not sure what the dual diaphragm brake booster is so I'm gonna say no but a previous owner upgraded this a fair amount so they might have done it instead. Any idea on how I can tell?
To add another question to the mix, has anyone put Brembo brake discs on an 1979-1983 Pickup? On their page Low Range says they fit 1984-1985 but emailing one of the guys, he says that they should work/fit. It looks like it won't be a problem but I'd still like to get informed first.