I have one of the exhausts from the first link fitted to mine, the number on my exhaust was 8p0 253 825, theres a picture in my build thread. However I think they'd both fit, theres loads of part numbers and many of them fit, if the width is 65 or 67mm it'll fit.
The kit contains the right fascia and adapter, but I'm not sure about the Ariel adapter, looks like single fakra in the picture but the polo has a dual fakra. It may work with just the single fakra though. I got all of my adapters etc online separately:
Fascia - £12.60
http://www.ebay.co.uk/itm/261563227095? ... EBIDX%3AIT
Harness adapter- £3.33
http://www.ebay.co.uk/itm/160661619588? ... EBIDX%3AIT
Dual fakra ariel adapter - £6.99
http://www.ebay.co.uk/itm/Car-Aerial-Ad ... 232e0e4315