The pictures kind of speak for themselves. Some time in this car's lifespan, its taken a 'light' bump on the nose, resulting in some rather interesting reconstruction. The passenger inner fender has been cut and replaced forward of the shock towers. All of the work appears to have been done with oxyfuel welding and some kind of bronze colored filler. I've been uncovering this filler material over the entire passenger side of the engine bay, across the core support, and on a few places on the driver side.
I'm including shots of the damaged passenger side and shots of the relatively unmolested driver side for reference. Pictures are aligned as if you were standing in front of the car looking towards it, left picture is passenger side, right is driver.
The upper portion of the core support is all factory welds, with the lower made up entirely of bronze colored welds.
Matching creases in the upper frame on both driver and passenger sides at roughly the same point, complete with drilled holes.
Moving back now from the front of the car, the headlight bucket area, most notably the left side, which has been completely reattached.
Finally, the inner fenders. The passenger side has been completely chopped and replaced forward of the shock tower, I've since (poorly) welded the two pieces completely together, as the origional repair welds had long since broken and seam sealer was the only thing holding it together.
EDIT: The upper frame on the left side has been partially replaced as well, and now has a nice gap even with the shock tower.
Now, I know very little about how body shops do frame repair of this kind, so this may be perfectly workable (I did drive it like this for two years). However, with the new turbo engine going in and the possibility of seeing autocross / roadrace time, I want the peace of mind that comes with knowing my frame is solid.
My main concerns are the creases in the frame and the shoddy looking bronze welds. Could I just run short 1" seam welds between the bronze ones? Do the creases need to be cut and new material welded in, or can they remain as is?