I've been thinking about getting a set of I30t/I35 Sport/Maxima SE rear springs and installing them on my I30 Luxury model (my understanding is that the rear springs are the only difference between I30 and I30t models). I figure a used set would be relatively easy to get, but how noticeable is the difference and would it be a worthwhile upgrade?

 

the difference is def. noticeable at least on a 4th gen/I30, that's all I'll say

 

Yeah it does, I've driven A32 I30s and I30ts back to back, but not the A33s. Is difference just in the springs on the A32s as well as the A33s?

Also how expensive a job would this spring swap be and considering the car has 68K on it is there anything else I'd want to change at the same time?

 

For the rears, $75. @68k since the tires are off the rear-brakes would be a little bit easier....