Replacing my older Coleman Mach A/C ceiling assembly

[drhotwing1]

I have an older RV (1985 Jamboree) that has the Coleman Mach air conditioner unit installed and running well, but my ceiling assembly is pretty much cracked and brittle so I want to replace it. Of course the original unit isn't sold anymore so I wanted to know the exact replacement that will work. My unit has the heat/ac settings on the dials (seen in photo)

I see this unit a lot so I wanted to know for sure that this unit is the one that I need. Also, is it a fairly straight forward job to do?

https://www.rvpartscountry.com/White...oaAuj5EALw_wcB

[IMG]broken unit by Jeff Mando, on Flickr[/IMG]

[NHRA225]

I don't believe that bottom assembly will work for the older Coleman or at least it didn't on mine when I updated to a Mach 8 .Give this Company a call >>https://www.airxcel.com/coleman-mach...ts/accessories