Re: 1970 GMC 2500 2WD 8 Lug disc brake conversion
You need a disc/drum master cylinder and prop. valve.
You can use the suburban stuff or buy aftermarket.
The '70 drum brake M/C and distribution block need to be swapped out.
You will have to bend some new steel lines.
I would try the '70 pitman arm.
If it doesn't work,... buy one for the year of the donor truck.
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