I forgot to mention that if you really do want something other than the
stock heat shield then I've had good luck with "welders blanket". It tough
enough to withstand the fires of hell and it's cheap at your local welding
store (even cheaper at mill stores :-)

S. Todd Bartrim
Turbo 13B RV-9Endurance
C-FSTB
http://www3.telus.net/haywire/RV-9/C-FSTB.htm