Unbolt P31-01 Engine Mount from Fuselage. Updrill #30 & cleco F17-04 Windshield Strap to F17-03 Upper Firewall Former. Cleco F17-03 Upper Firewall Former to F17-01 Lower Firewall. Updrill #30 & cleco F17-03 Upper Firewall to F07-01 Glare Shield. Drill for SkyBolt fasteners x 6. Dis-assemble all. Deburr all & re-assemble. Used MS24694-97 for lower bolt on lower corners of motor mount.