Can a heat pump & black tank flush be added?

[paulmlac]

Looking at a new Sunseeker. It's a leftover '11 so it's a good price. It's missing a couple things I would ideally want though if ordering new: The heat pump on the AC unit & the black tank flush. Can a dealer service dept add those items? I'm pretty sure I've heard about aftermarket black tank flush kits but not sure about aftermarket heat pumps (without having to replace the entire AC unit). Thanks!

[TURBS]

I think you can add an aftermarket heat strip.
I have seen mentioned that they do just ok .

[Herk7769]

I think he said heat "pump" not heat strip.

[Ray F.]

the heat pump is well worth it i have a 15000 btu with heat pump on my 32 ' forester and i havent ever uses the furnaace and ive camped when it was in the 30's.