Lower Rear Quarter Patch Repair

Got a delivery today, a new AMD quarter!

My dilemma, and I might get flack for this, is that I don't want to do the full quarter, just a skin. So that would mean cutting up the new piece to size. I've done a lot of research and I don't feel that I have the skills nor the tools to do the full quarter properly. As well, a lot of the metal is still good on the original quarter and doesn't need to be cut out.

My question, is where would it give me the best results to make the cut?

I was planning to flange and lap weld, any concerns? I have researched this as well and didn't find any real issues vs. butt welding. Some mentioned this was an easier way actually to control the metal sinking in. Any thoughts/experience is welcome.

I didn't know where to store it, so figured I'd just tie it to the car.

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