edit- found my answers here http://www.perth-wrx.com/vb/your-dri...i-sled-14.html
disregard Bram unless you wish to elaborate

hey Bram, which Sheethot product will you use on the headers?
iyo is the tubular stuff worthwhile or is it better to form the flat sheet type?
also, your opinion on their turbo sheild, worth $190 odd.

apologies if you've been over this before.