The firewall swap is one that I really am glad to do, being that the firewall configuration had to be changed so many times while tackling oil temp issues. However, drilling holes, especially large ones in SS sheet sucks! The fire protection is awesome, but this stuff sucks to work with. Add to that, the millions of holes needed on mine and it's like drilling though a piece of Iron Swiss Cheese :) Definitely glad to see her coming along so well :)