B body spindles
this may explain
i'll convert both Imperial and metric from mounting face to ball joint socket.
RH B Body 45mm 1.750 inches
LH B Body 55mm 2.125 inches
'66 A body 70mm 2.750 inches
the B Body measurements should be the same but both i have are from different manufacturers (possibly for different year vehicles and done on purpose?). Boxed same but one box had been opened. (i got them cheap so doesn't matter at this stage as i'm experimenting)
but what it does show is there is quite a difference and will affect the length required on the steering links. This will also change Ackerman quite a bit.
also i show that the B Body arm is positioned lower than the A body arm so this will affect bump steer
have fun.