4th generation springs

does anyone know anything about springs for front and rear? i have ZAM, ZDW, ZNJ, and ZSW. (LF, LR, RF, & RR), in order. i would like to buy some new ones online, maybe through mopar outlet cause they are cheaper than going to dealer. i am looking for the strongest springs, touring maybe? taxi? police? i hear these models had strong springs. which are strong/stiffer? and any chance with part numbers?

i converted my other minivan with touring but dont have paperwork anymore and the dealer closed. would like the stiffer rear spring, single leaf, even though it has nivomat.

guess maybe the heavy duty suspension is what im looking for, i think the star report says it has SDA normal duty suspension...

k, can someone give me the numbers for heavy duty front springs so i can replace my front struts? thanks

:sleeping: