DEMON THEIVES, BURTON POWER ETC SELL THE WRAP..
(sorry caps lock) its comes in 50Ft lengths IIRC.
i just one WHOLE roll just to do my manifold and turbo that was the 2" stuff.
Depends if your going to wrap just the turbo and the downipie or the turbo manifold and downpipe...as to how much you will need...
1 roll should do you for turbo and downpipe or turbo and mainifold but you will need more if you want to do the lot.
CheeRS
Phil