Does anyone have a Chevy 60 stub and a Chevy 60 spindle that I can look at? Making this knuckle work is becoming a pain. When I get the Ford spindle on this hybrid knuckle, it will not go on all the way. When I hit the nuts with an impact, it basically locks the shaft to the spindle, making it unable to turn. The distance from the spindle mounting flange to the center line of the balljoint is 3/8" difference as well.

I was under the impression though that the only difference between Ford/GM spindles was the length, but there must be some difference in the area of where the spindle slides into the knuckle.