Cut the fiberfrax to measure. cut the stainless steel foil to measure. Positioned the foil and drilled the holes using the recess screw holes.
Installed the spherical firewall fitting flange and matchdrilled.
After sandwiching the fiberfrax and steel foil between the spherical firewall fitting flanges i used a cutter to create the hole for the ball passthrough.
Trimmed the fiberfrax and stainless foil.