Finally! i did it myself, took me 5 hours (my first time changing coils). The result is pretty cool, i had 6 fingers of space in the front, now i can only fit 3 1/2.
In the back i could fit 5 1/2 now i can only fit 2 !!!! The ride is alot 'stiffer' now, more fun to drive but a bit anoying when driving in montreal.
I hate having the back lower than the front, but i think the front will go down a bit with the weight of the engine.
My old springs were brand new (6 months) so if anyone wants them they are for sale!!! I think they would fit a Infiniti i30 too.
J.