Project Frankenstein intro and help please

[Bus Ted Knuckle]

So here is the plan...

Take these two trucks and make one 3/4 ton heavy hauler for my trucks and tractors. The K20 has a who knows what year frame under a 81 model cab, clip, and bed. I am going to use the cab and front clip off of the 76 model 'cause the 80 model has been jerry riggified with garbage and nonsence.

I do need help, can anyone identify the axles in the pictures?

More details to come!