First I used a carbide burr to ream out the hole to the edge of the compromised area. I used one of the old rubber mounts to mark the circle.
I then cut a patch from some old sheetmetal the same thickness as the frame:
I used a grinder to get the final fit for the patch and beveled the edge a little. I then tacked it in place and then welded all the way around:
I then smoothed it out using an 80 grit roloc disc:
I then marked the hole and drilled it out. Drilled it a little smaller than needed and again used the burr to get it precise. Done.
I decided that the rails where the transmission crossmember mounts was not compromised enough to need any repair. It looked worse before I wire brushed the frame.
While I had the welder out, I repaired the broken stud on the p/s parking light housing. I broke this when I removed it from the front panel and laid it on the welder at the time to remind me to fix it later.
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