How easy is it to mod the HORI RAP 4 Kai?

I just got one of these and I like it but I have an old TE with Sanwa parts that I might like to move over to the RAP 4 Kai. Is that easy to do?

Having had a look at videos online it seems like the buttons are relatively straightforward but the stick looks way more difficult.

Stick and buttons are both easy to replace; just remove and replace like most other sticks.
It’s artwork that’s a pain in the backside to swap.