There are plenty of dual springs available that will fit the Jegs head that would work well. A fresh alternative idea is a Lunati beehive spring. For example, Lunati’s Pacaloy ovate beehive spring (PN 74818) offers 130 pounds on the seat at 1.800 and 310 pounds of load at 0.575 lift. Plus, the top of the spring is lighter for better control at high speeds. This spring package runs around $260 for springs, retainers, and locks.