I got some from here when I done some sections in my engine bay. Lots of choices.

http://www.agriemach.com/

how do you find the road noise and heat soak? noticed the other day how much heat comes in from the gearbox and engine, fine when tops down, st when its raining, plus I plan to take it down italy and other long jaunts so if it helps at all i dont mind the expense. I know of Dynamat, which seems to be the main one and found many other alternatives for a lot less when seem to perform just as well, but they are all in the US (the well reviewed ones)