how to repair

I have a 1970 vw bus.
It has been hit on the left front and side.
Left side is pushed in a little bit.
The door is destroyed.
The rest of the car is good.
I have a second vw with a good front end and left front door.
How do I exchange the good front and door for the damaged front.
Where do I cut the old front off etc. etc. etc.

I can take pictures to send.
thanks,

I and the bus, are in the jungle in Costa Rica.
I am a very good and creative person with great mechanical abilities.
I just need some good directions.
Thank you very much in advance.
I will go and take pictures



Mac