I got it from CAM developments on ebay, they are awesome, everything goes out nicely packaged and bloody quickly, cant fault them, wish all ebay transactions were as good, I got ALL the heat stuff I used from them, except for the jubilee clips for the wrap (dont use the ties, they are shite)

Stav, Rod tarry killed a turbo with a blanket, and the performance gains were very minimal, I wouldnt bother going that far, all ive done on mine is make a shield around it to help keep a bit of heat in, but not try and seal it up totally. (ive had to make a steel former now for the shield, as the ally only one got hot and went soft and fell apart!)