I have a 98 F150 SC and I am installing a console from a 98 Navi. I understand the bolt in process. What I can't seem to find any info about is getting the console heating duct to work. Does anyone know the part number(s) for the main lower heating duct to get it to connect to the console heat?
Am I looking in the right direction with this....
Do I need #36 from this pic:


and then what about cutting into the dash for access to the heating duct?

I guess I'm a bit confused with the difference between #14 & #21 from the F150 dash:

and what I'd need to replace from the Navi dash to get a nice fit. Like #14 from this???


I would appreciate any info to get me headed in the right direct!

Thanks!