Questions on R&R heater blower motor

[WyoGMC]

I went to turn on the heater and the fan did not work. Well I have been putting it off because it is not my DD. Now it is starting to get cold and I need to fix it. Oh its a 68 non AC.

I determined the the motor was shot by running a hot wire to it and the motor didn't come on. I read a thread on how to change out the heater core and it was very helpfull. I ordered some other parts too. I figured while I was working in the area I could freshen up a few things. Other than the motor I got some heater cables and a rebuild kit for the controls.

I decided to try and take the bad motor out and have a head start on when the motor shows up. Got the motor out and found the fan cage had broken on the shaft, probably locked up the motor and let the smoke out of it. It did not turn as free as it should have. So now I have to buy a new fan cage too.
TIA

Finally the Questions
1. Will the hood have to come off to put in the new motor and fan?

2. Do I have to take the heater box off to put on the new cables? If I do I might as well put in a new heater core and not have to worry about it for a while.

3. And any remove and install tips would be helpfull on the heater motor, rebuild kit for the heater controls and the cables.