Replacing a Grant steering wheel

[EagleChief]

I scored a couple of GM steering wheels at a swap meet today. My truck has a Grant steering wheel on it. I want to pull off the Grant wheel and put on a GM steering wheel. How hard/easy is it to do? I've never messed with changing a steering wheel before.

Currently, the horn doesn't work, but I'd like it to. I think it is wired up to a button under the dash. I can push the button and hear the horn trying to honk, but nothing really happens. So, I'd prefer to hook it up to the steering wheel like it should be.

I'm guessing I'll need help identifying the column as well, as it's not the original column. I'll post some pictures to help.

Thanks in advance!