was curious if all flattops had the spindle face milled at the same angle? i got a pair off some one, and i believe they are off separate vehicles.. driverside is drilled/tapped from factory, and the pass has been milled/tapped.. looking at both knuckles, there are a minor differences (don't care about that), and i tried looking to see if the spindle faces were at the same angle.. they LOOK to be.. maybe a hair different.. just wanted to know if different mfgs milled at different angles.

As far as I know there is no difference.

what you probably have is one chevy and one waggy.

the chevy being the factory taped one

The only difference I've ever seen is in Dodge flattops. The difference there was in the clocking of the bolts that the spindle attach to. Every thing else was identical. I have several Chevy and Jeep knuckles and they are identical in the area you're wondering about.

its probably a pair of chevy knuckles, the factory driverside is milled/drilled at the factory and the passanger isnt.