This is my upstairs A/C that I replaced last spring with a 3 phase straight cool condenser (because it was free) that I hacked the VFD into.
It ran just fine all simmer long and I had originally planned on doing the heat pump modification once the summer ended.
Well, it's Jan 6th and I'm finally getting around to it.

I purchased a new Reversing Valve, TXV, 3/16" copper tubing and used various piping I had in my junk bucket(s).

For now there is no defrost control but I will install one later.