Hot Rods 32' spindle to V8 60 axle

I modified a pair of 32' spindles to accept 39-48 juice backing plates. I failed to realize that the spread between the bushing bosses is shorter/narrower than a 39-48 spindle (as shown in photo comparing the 2).
I have a new 39' kingpin kit and the bearing race is much too thick to use.
What are my options?

-mill a bit off of both sides of the bushing boss on the 32' spindle?
-match a dimensional bearing to fit my needs at a "bearing store"
-order a $105 32' kingpin kit from Macs just for the "correct" bearing/shims?

I'm confident that using a 32-34' spindle on a later axle has done before but need to know the easiest way to make up the different dimensions.

Thanks in advance,
-Kirk

 

http://www.earlyv8garage.net/index.html
Kirk, Dennis and his dad can supply a special king pin kit that uses needle roller bearings for this application.
Al.

 

use `32 kingpins....they put the thrust bearing on top

 

I just installed one of these kits at work , it's a neat deal... I'm a little worried the thrust bearing will take all the load from being hammered down the road , potholes , dirt and water... But we will see..

 

Thank you for the replies, I will be calling Dennis after Christmas and get this squared away. It'll soon be 1 step closer to a rolling ch***is!

 

Try ***embling the 39 kingpin kit with the bearing above the spindle. You would need to grind a new notch for the locking pin, but it's basically the same thing as a 32 kit without the knob on the kingpin.

 

The top of the'39 pin isn't designed to carry the weight of the car, the bearing on bottom of the axle does. the'32 pins have the casting on top for the brakes to support the weight

 

Yep I have used 32-36 king pins before chopped off the extra on top and welded some 3/8 on top just so I didn't have that eyelet on top

 

Yeah, you guys are right. Don't do what suggested. I remember now that later kingpins only have a small bit of weld holding that top piece on.