MP road racing springs

Oval track leaf springs in general have a thick front segment to resist wrap up. And have a low arch. They may or may not have the added upper leaf to resist axle hop/tramp under heavy braking. Still going to be better than a stock leaf spring for handling. The spring doesn't care what it's being used for. Landrum and Hypercoil also make Oval Track leaf springs.

My 2001 and 2007 MP catalog list Oval Track Leaf Spring, 120 lbs/in front segment 20.5, rear segment 35"
P4529414 Zero Arch
P4529415 1" Arch (edit for correct # arch)

They are explained on page 163 of the MP Chassis Manual.