Trying to determine what rear axles my 67 has?

[johnymac]

I have a 67 C10 stepside. I believe it came with factory 411 gears in her. Now has 373 in her. It is a 12 bolt 8.875 rear end, has coil springs.
Anyway, I am preparing to put a posi unit in it. In my search for parts I have been asked if I have a Splicer 44 or 60, or a HO33 or 35 axles. Is there any way for me to tell? I can't find any numbers on the axle tubes. There are several different combos, so can't just buy all that might apply.

Can anyone help me?
Thanks in advance for any that reply.

Thanks again!!