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521 Disc Brake Conversion Question

sam o nela

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So I've got most of the hardware I need for my 521's conversion:


~Front and rear brackets

~Hardbody calipers

~Isuzu rear stuff

~'81 ZX Master Cylinder


I'm also going to be using a 620 brake booster. I will also be bending and running all new hard brake line from the master cylinder...


I ran a search but was unsuccessful in finding these last few things I want to confirm:


What size brake line will I need? Size and thread pitch at the master cylinder connections


Any other things I should look at getting or road blocks I may hit?



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