Upgrades for 08 Octi

Hello everyone,

I own an Octavia 2 2008 Elegance, and I want to know what relatively easy and cheap. I was thinking to change my Stream radio with a Bolero one, and go for facelift climatronic interface. I have two questions here:

1. If I go just for the Bolero, it will need anyother mods?

2. If I upgrade the climatronic , that will need modifications?

Oh and I want to change my interior to the vRS one because I found a cheap one. If I Don t have heating seats and want to upgrade to this with the new interior it is plug and play?(of course with a new climatronic with heating seats controls).

I have a lot more questions but I will go slowly.