The exhaust pipes I ordered from Fuel Exhausts in the UK arrived on Monday. They had been ordered in December and there was a bit of a wait over the public holidays for Customs to clear them for delivery; that involved my payment of $$$ for GST plus a fee.
I fitted the exhausts on Tuesday and took the bike for a short run in the evening. There is more sound and it is a good sound, but not that noticeable when riding. The main benefit is the weight reduction - those Hayabusa pipes weigh in around 7kg each with the new ones about 2.5kg.
On Wednesday morning I did run over to the Napier coast and back home via Hastings.