Guys- just how much of diff will be felt by replacing stock shocks/struts from 2000 v6 to Tokico HP's ( blue ones ) ? Also are the Illuminas worth the extra $ over the HP's ? Keep in mind that once I stick em on there, I'm not gonna adjust ( Illuminas )anything.

I had to add some info to my post- here's where i'm at, and reason I'm asking: wheels, rotors & have mag catback ( not installed yet as want headers & x-pipe ). Should I hold off w/headers & pipe, and stick my $ into suspension ?