Swapping RCD510 with RNS510 (R) and RCD310 with RCD510 (Polo)

[dave_r]

I was going to upgrade the Polo to an RCD510 but figured I may as well upgrade my R and then swap units.

The R has RCD510 with factory fitted BT module and MDI.
Polo has RCD310 with nothing else.

After some searching I found these 2 items from a seller others had purchased from. I assume the LED is a newer hardware revision and the one I want.
VW MFD3 RNS 510 passat tiguan golf C RNS510 LED STAR
VW MFD3 RNS 510 passat tiguan golf Version C RNS510
He also lists the items as being Remanufactured but in the description they're brand new. Which is it?

Then the 9W7 BT module from the "polish guy and maybe an MDI interface as the missus has an iPhone

If I purchased the LED RNS510 and an additional BT and MDI module could I do the following:

1. Install existing RCD510 into Polo, adding the new BT and MDI modules at the same time. Other than the dash fascia, what else would need to be removed?

2. Install RNS510 into the R, hooked up to existing BT and MDI modules. Again, I assume this only requires a fascia removal and the GPS antenna/wiring can be hidden under the dash?

I have VCDS so any re-coding is no problems.