Super stock spring part number question

I know someone who has a old set (new never ran) springs. Said part # is 3690269. Anybody k ow anything about these? I csbt find any info on them. Thanks

3400 lb super stock manual p3690269-70

1968 hemi cuda/dart SS/AA P3412002-3
1968 hemi cuda/dart SS/A P3412002-3
modified production P3412002-3
pro-stock P3412002-3
3000 lb non-hemi super stock manual P3412002-3
3000 lb. non-hemi automatic p3690265-6
3400 lb all automatic p3590456-7
3400 lb super stock manual p3690269-70
3600 lb all automatic e-body p3690460-1
3800 lb all automatic p3690458-9
3800 lb super stock manual p3690267-8
2800 lb automatic pro gas p4120863-4
2800 lb pro-gas p4120863-4
3300 lb automatic e-body p4120865-6

found these on another web site....

Nice effort on your part, thanks for sharing.

google

Thanks for info. I found my old chassis book and found them in there.