I removed the complete outer cowls by removing the lead and then drilling out the spotwelds until I could slip the old ones out. Gentle prying will make the old spotwelds visible. Then jam the new ones under there and hammer down the old cowl and weld. The only tool I really used on the outer cowls was a 5/16" short carbide drill but I made fastest work on panel cutting with a 4 1/2" angle grinder with 1/16" disc. For small areas I like a 90 deg. die grinder with a 1/32" disc. I used a Lincoln 110v 88 amp welder with .025" wire with co2/argon gas. Even with a long extension cord it worked great. The spotwelds will be in a random pattern so I don't think they're in the same place on any 2 trucks but here you can see where I drilled to get out my outer cowls.

http://community.webshots.com/photo/377692314/1377795871023244788gotDyU

1952 1300 Canadian 1/2 ton restomod
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