springs

Ok guys I went to a swap meet today in Lawrence Ks,picked ups set of j heads complete for
100. The guy has a set of ss springs 002 and 003 asking 125 .Question is when you set them upside-down how much difference is there in the arch nomally.The guy says his buddy had these on his car for a short amount of time they still have the labels on them barely but they're there.Whatcha guys think? I am going back Tommorow saturdays are bigger