welding cut out bulges onto flat dart hood?

68383GTS said
I use the cold air right out of my air compressor to cool off my welds.Connect a air nozzle to your air compressor hose.Then after each weld blow air on the area you just welded you will be amazed how fast it will cool off.My buddys Dad show me this trick a few years back.
If it were me I would lay the buldges where you want them and trace around them with a sharpie marker.Then I would cut the hood on the lines and butt weld the buldges flush and not on top of the hood.

I was thinking of cutting out holes and butt welding them in, but I think with a mig welder the heat would warp the hood, I don,t know what gauge the hood skin is but it looks pretty thin, maybe 20 gauge. when I lay the bulges over my hood, they lay perfectly flat.