Recommendation for new standard downpipe for 1.8 GTI tintop.

My downpipe has started to split just before it meets the middle section. I would like to stay standard and was looking for any advice/recommendations for a good quality replacement.
I've seen this on eBay:
http://www.ebay.co.uk/itm/VW-Golf-Mk1-GTi-1-6-1-8-Exhaust-Front-Down-Pipes-/272319889000?fits=Model%3AGolf&hash=item3f6787be68:m:mq_8JjU5wWn8VOPNkR00KVA

or this on VWH
https://www.vwheritage.com/shop/161253091C/front-pipe-mk1-golf-cabriolet-scirocco-gti-mode/

Has anybody used either of these or have other suggestions? Should I fit it myself or get my local exhaust centre and let them deal with the manifold bolts?

Thanks.

Matt.