if you keep an eye on ebay then graham goode were selling them in their ebay shop (under the name rs500_2 )

here's the inlet studs
http://cgi.ebay.co.uk/YBO038-New-Cos...QQcmdZViewItem

you MUST use genuine exhaust studs and nuts,the inlet isn't so important,obviously just get the right sizes and they'll be fine,i used new studs for all 9 inlet fixings,and then a nut and spring washer.

the exhaust nuts can be pricey though (nuts around a fiver EACH from some places ) but if you use the wrong ones the heat will kill them and they rust to fook and you can't get them off again