I am considering buying a Bolero off Ebay to fit to my Yeti to replace the Swing radio/CD. I notice there are many different part numbers for Skoda Boleros, can anyone tell me if I need a particular part number or are they all interchangeable ?

Does it matter if it comes from a Superb, Octavia or some other Skoda ?

*Mostly* interchangeable, but depending on what you currently have fitted you may need a replacement fascia (headunit surround). The Superb Bolero has the same dimensions as the Columbus, while the Octavia Bolero is the same size as the older Stream.

Eddie-NL currently has one for sale here: http://www.briskoda.net/forums/topic/256447-bolero-6cd-changer-octavia-version/

He's a regular reliable and knowledgeable member here, though you'll have to confirm with him that he'll ship outside of the UK.

Actually, having a look online, it looks like your Swing radio is the same as the Octavia Bolero so it would be a straight swap.