My response is a general patch panel opinion. I don't have a clue about a specific patch panel for an AD fender. If there is a patch panel available, that's your ticket. Usually Jim Carter and group know what they are talking about. If two vendors say they are for the area you describe it should work.
Jim Carter PN: SMF400L says it is exactly what you want.
Filling Station PN: SA-252L
They do look like the same part with the same description. I believe if it was wrong, they would have found out by now.
NEWS FLASH: I may have figured out what the AD guys already knew and are laughing at me.
From what I see on the web, the lower rear of your front fender has a "bolster", stick out/wrap around, bulgy, skirt form. The front of the lower rear fender has this same feature. At the exact spot you say you need a patch. The piece sold above
IS this bulge. It fits with it's longest curve
horizontal. Look in our gallery pics or on the web and you will see. You may be thinking it fits vertically or you have had too much pepper spray blowback lately.

You may have to reorder
Anyway, it's what I think I see, not ever having an AD yet and the pictures of the patch panels are small. Maybe there was a fender that did not have that moulding feature? or it's rusted off? or you have a bad old repair? Someone let me know if I'm all wet.