Lol thanks its always easier spending other peoples money :-) thinking around 2k.
Thanks for the LSD suggestion and subframe bushings. Curious if you have experienced those mods you indicated and how it helps with handling vs coils. Helix sounds good, as does the ER. I have heard that the ETS product is just ok but it is popular due to price and marketing/availability.
Originally Posted by CJ421
What is the budget? I just want to know so I can suggest something that costs a lot more.
I vote - none of them, get a limited-slip differential + M3 subframe brushings.
If I had to pick from your list, I would do FMIC for sure, on an N54 it is a very important mod (especially w/ engine mods). Get the Helix one.