John, thanks for precise answer.
Yup, I need a forged one, internally balanced but I see none being advertised. I guess it's a low value item as everyone strokes today. My old crank is a mess - it must have been severely damaged and then welded.
If anyone has a good crank laying around count me in...

BTW my crank's rear main dimension is only 2.807" and it was definitely rewelded.