Floor Pan Questions

do you plan to install this all at once or in sections? Im guessing youve done this before?

Floor pan all in one piece. Not sure on the trunk/quarter. I might separate it on the factory seams and weld it in one piece at a time.

I patched lots of rust when I was young back in Pennsylvania, but they were all beaters and the welds didn't have to be pretty.

Back in the 80's I welded floor patches into a 66 Mustang but they weren't factory or repro pieces. Just new metal bent up to fit.

While I was in college, my 74 Nova got T-boned. The car was clearly totaled, but I was too broke to buy another car. So I bought the side of another Nova for 75 bucks. Spent Memorial Day weekend at my Dad's welding it in. Replaced the rocker, part of the floor to the factory seam and the rear quarter to the middle of the wheel arch. Came out nice.

Back then I used oxy-acetylene welding. If it warped I just beat back into shape. This time it will be MIG and I've never MIG welded before. I have an old Lincoln stick welder, but I'm sure MIG will be very different.