Dashboard wizards:

I have read, " removed the dash in 16 minutes"????  Sounds good to me, but I really don't think it's that easy. I have a 1990 multi and need to go behind the dash to repair the air intake door. ( I think )  Can anyone please give me a step by step, 1,2,3,4,etc.
on where to start and how to do it ?

Thanks.
clarence
1990 multi
pinehurst,nc.