Jeep 4.0 in 69 Barracuda

JohnFM3 said

yeah, I know. But I am really wanting to stick with Mopar before looking at aftermarket.

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Well aftermarket is gonna be your only choice for multiple piston brakes for the 73 and up spindles
The KH brake are the only multiple piston brakes mopar had for the a bodies, and those only fit 72 and older spindles.