Should I replace this metal?

[mastorna]

I'd like to keep as much OG metal as possible and I have a replacement panel but curious if you'd suggest to keep what's there? Do you think this is too much rust? The far side has some cancer that would remain if I didn't cut it out. This panel area is a bitch to weld\grind.

_________________
1959 Type II Mango SO-23
1962 Type II Kombi Light Gray
1963 Type II Standard Sunroof SWR\BG
1963 Type II Deluxe MG\PW

[theKbStockpiler]

Maybe you could use only part of the replacement panel?
_________________
My beetle is not competing with your beetle. I have the yellow beetle in my town. There is a red one, a green one ......
Use all safety devices including a mask.

[CiderGuy]

I would ... on a ghia I'm restoring, I replace the bottom 12 inches of almost the entire car.
_________________
----------------------
Cars Currently Owned:

1970 Karmann Ghia Coupe
1973 Karmann Ghia Coupe - Project car for sale
1970 Karmann Ghia Convertible (Body off restoration)

Timing is everything

[esde]

If I was to leave it, I would sandblast the rust clean, and then treat it with ospho to kill whatever little bit of rust might remain. If you're going that far, with new panels to give the car a new life, you've got to get all of the rust gone. Sandpaper and wire brushes aren't enough.

[Eric&Barb]

Wire wheel, sandpaper, and phosphoric acid. Then let acid dry out (covering the area in plastic wrap will let the acid last longer by not drying out and work better) and repeat the process till all rust is gone and steel turns shiny silver color. If it buffs with the wire wheel a lead color there is more rust that needs to be removed.

Found while it takes time, this leaves as much of the metal as possible.
_________________
In Stereo, Where Available!