That uppipe blanket is sweet. When you make one for the typical GTSpec / Tomei / Perrin EL header, I'll be all over that.
Have you thought about a blanket to keep radiated heat OFF the oil filter? Lots us have headers which pass very close to the filter, and have no heat-shielding at all...
Terrible things like this don't happen where I come from. Other terrible things happen instead.
Obligatory 'build thread