BBP upperna arms

72bluNblu said

You’d need a tapered ball joint adapter, DoctorDiff sells them.

Would depend on the disk brake conversion too.

Click to expand...

Uhhh, those don't always work out.
Read this starting with post #60:

69 Dart 4 door cruiser

The Dr Diff adapter hardware does not fit some ball joints. I explain why in the thread linked above.