strut question

i am seeing 2 strut options for the 01-07 town country with 119 wheelbase. the 5135538AA for normal duty and the 5066334AA for touring. and finding out, the limited and touring have the same size spring/bar,etc in front. even the handicap vans have the same strut numbers. this has nivomat rear.

looking for the stiffer strut, not the soft comfy feel. more responsive. maybe the rod diameter, or the size of the hole the fluid travels through.

please someone help, ive spent 3 days researching and 4 dealers later, nothing. have had different questions all answered differently. I would like to know which one has the least resistence, thanks!!!

oh, twin tube struts are not recommended for nivomat rear, the gas matic, larger rod struts are for nivomat....from what i'm told. i cant find gas ones cept through mopar.