75 duster floor pans

this is the first time I installing floor pans i know that there is going to be a lot of spot welding but is it as simple taking off the floor pans, cleaning the welding surface, drilling holes for the welds and screw it on tight to hold the pan and start welding on opposite ends so it doesn't bend on me. has any one done this before and let me know if im missing something or any tips?

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