Oddball car - swap to disc - ideas?

BillGrissom said

The Scarebird adapter plate bolts to your existing drum spindle, so doesn't matter what upper ball joint you have. If your car uses the same lower ball joint as earlier drum cars, the spindle "should" have the same bolt pattern.

You can save a lot if you buy just the adapter plates from Scarebird (~$110) and source the Toyota and GM parts locally or ebay/amazon.

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It might not matter what ball joint you have, but it DOES matter what spindle you have.

All of Scarebird's conversions are for 65-72 drum spindles, and there are different versions of the kits for the 9" drums and 10" drums. No mention whatsoever of the 73+ drum spindles, and they are different. The 73+ drum spindles, like the 73+ disk spindles, have larger wheel bearings. There are several disk conversion kits for the '73+ 10" spindles that use the large ball joints. They don't work on the '72 down 10" spindles, and the ball joint taper diameter isn't the problem. One example is Doctor Diff's viper caliper conversion kit for the '73+ A-body drum spindles...Viper Caliper Mounting Brackets for Mopar DRUM Knuckles