welding cut out bulges onto flat dart hood?

The hood will not warp if you take your time.Make one spot weld at a time blow it cool with your air nozzle.Keep repeating this and skip around with your spot welds.If you lay them on top of the hood that with be just that much more filler that you will have to put on the hood.I butt welded the whole front edge of one hood to another and never had a issue.I would use a high quality filler so youdo not have to worry about it cracking out on you later.