Just playing devil's advocate here, and I know we've discussed this in another thread somewhere...
Why exactly do you want to wrap your DP? I know that it can help keep some heat out of the engine
bay, but personally if I were to wrap my DP, I'd wrap it from the turbo on down maybe 18" and leave the
rest bare. Theoretically, the best set up would be to wrap the header, up pipe and turbo and leave the
DP bare. Not only do you want to keep the heat inside the header and so forth, but you want the exhaust
to cool as fast as possible AFTER LEAVING the turbo. Whether there would be noticeable differences in
power or spool is hard to say, but based on thermo and fluid dynamics, this should perform the best.
Anyone else care to expand on that...?