C20 crossmember and control arms on c10

[low900rr]

Looking for opinions. I bought a complete crossmember with control arms from a c20 to use in my c10. I know the upper balljoints can be swapped to c10. The lower control arms have bigger balljoints than the c10. So do I just get some c10 lowers and use them or do I ream drop spindles I have to work with the c20 balljoints? I have read that the c20 lower arms have a bigger pocket for the airbag cup to sit into. Thanks