What years/generation Infiniti I30's are the same as 4th Gen. I have an offer to buy the Eibach Pro-kit springs for $150 used on this Inifiniti for a couple months, is it worth it? Does it fit?

yes the infiit and the maxima have the same springs. they will fit. i dont know if it is worth it though. i wont buy used suspension components but that is me. other people do.

it'll fit. as long as the springs are relatively new and uncut, i think they're a safe deal. what I definitely wouldn't buy are used struts, too many things could go wrong with those.