Lower control arm question.

[Tahiti or Truck]

Hello. I have a 66 c20 with like zero caster in the alignment. I've read post with moving the lower control arm mounting forward in I think 67 and newer front clips. ( the ones with U bolts that hold the lowers to the clip). I have the old style so that isn't an option and I want a lot more caster. I feel I have good fabrication skills and I want to buy an aftermarket set of newer style (U bolt) lowers and modify and relocate the lower ball joint forward. My question is..are U bolt style lowers the same as the old style? Can I buy the newer U bolt style, modify it, remove the control arm shaft and replace it with the older cast style lower control arm shaft that fits my front clip?
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[Captainfab]

I have not tried this, but I do believe that the '63-'72 C10 LCA shafts and end bushings/nuts will fit the '63-'66 C20 LCA's. In fact the C20's from '67-'86 and R2500's from '87-'91 use the same style LCA shaft and end bushings/nuts. I don't know for sure if all of those are interchangeable, but it wouldn't surprise me.

Now as for the absence of the LCS shaft saddles on the crossmember. If you wanted to add those, you would have to be very precise in your locating those on the crossmember, otherwise you will have a real mess. if it were my truck, I would just change the entire crossmember to one that already has the LCA shaft saddles.