67 Chevelle rear suspension question....Please help

[malibu283]

I removed my stock rear springs to put in the new Eibach's. I ran into a little snag. the stock springs are pig tailed on both ends and the Eibach's are not, they are only pig tailed on one end. After lookin a little closer I think the larger part of the upper spring cup will hold the Eibach spring.

Has any one else had this problem. Please advise