Mopar Circle Track Help?

HI. My Name is Justin Queen from Irvona, Pennsylvania. I Currently run a Metric Chassis Dirt Pure Stock (Circle Track) Next season i have been asked to drive my Fiance's Grandfathers Plymouth Volare in the same division, i did run the car one time is year and finished 3rd. we have purchased a set of steering arms from firm feel make the car turn faster, my next question is is there any way to install torsion bars that would be equilivent to 1400 pound (RF) and 1200 pound (LF) Coils Springs? this is all new to me, so any help is greatly appreciated!! also are their ball joints to change roll center available for these cars? feel free to email me at [email protected]

Thanks!

Justin Queen
Pure Stock Racer
Irvona, PA