Any idea where I can find a spindle for my 1970 plymouth duster

Member is looking for right side small bearing disc brake spindle.

Still not a reproduced spindle.

I saw in another post on here that Dr. Diff made a kit that would work with an adapter. Anyone given these a try?

Mopar Reproduction Disc Brake Knuckles for A/B/E Bodies

You need a ball joint adaptor to keep your UCA’s, and then you would need the rest of the 73+ Mopar disk brake set up with the option for SBP drilled on the hub because the SSBC stuff wouldn’t fit anymore.

Further, just because you have the 73+ kit with the SBP added to the hub doesn’t necessarily mean you’ll be able to reuse your SBP wheels. Some work, some will not.