Patch panel welding - body guys

I would do it with the 45° angles like you have drawn.
Damn, my 05 is just starting to bubble on one side. They all do it, its the foam thats in there. Just make sure you go high enough to get back to perfectly clean metal but no more than necessary.
Where did you get replacement panels? New or junkyard?
I found these...
2002-09 DODGE RAM REAR UPPER WHEELARCH & OUTER WHEELHOUSE SET (4 piece set)