I got the biggest phillips I had that properly fit the head. I then found a 1/2 inch drive socket that fit on top of the screwdriver. I then hooked up a 1/2" drive ratchet to the socket and screwdriver and took out the bolt/screw.
Heat up the surrounding metal..NO heat to bolt/screw if above does not work first.
Si Vis Pacem Parabellum
1967 Starlight black PMD Engineering 400 Auto 1968 Alpine Blue 400 4 speed 1968 Verdoro Green 400 HO 4 speed 2013 1LE 2SS/RS Inferno Orange Camaro.