http://www.ptpturboblankets.com/subaru.shtml

Y10-12-10 I talked to Joe 512-490-6494

He said the
Subaru Turbo blanket would fit better for a internal wastegated Turbo
like the 914s T-25 than a T3 blanket would fit. Aviable in Red, Blue
and Black.

He will make a custom Muffler Blanket, give him
dimensions and where we want the snaps, also probably won't hurt to send
some pics as well. Thickness is 1.5 to 2"
but could compress to
1/4". He said all colors hold up about the same.

He said
that the exterior can be Silicone impregnated
fiberglass which i
imagine the exterior is OK for 5 to 600F, but he could
also do Silica
which is OK to 1000, not sure if that is F or C.