I'm wanting to spend around $200-300 on some suspension upgrades for autocross/track. As the months pass, I'll consider adding additional pieces, but I'm just wondering what I should try next. I currently have swift springs, run -1.8 camber all around, Michelin PSS, and Hotchkis sways on tightest settings front/rear (though I may loosen the front and go for middle on the rear since sliding and oversteer has became a problem after installing the swifts).

I can't decide between a front strut bar, rear lower tie brace, rear lower lateral 'M shape' brace, and/or front two point subframe brace; or maybe White line endlinks? The six point rear subframe brace is pricey since it has several pieces, but I guess I could go for it if the six point alone is better than a combo of a few of the other braces.

All found on GTSpec website. The braces listed are the only ones that will fit an X sedan, so that's what I'm limited to. 2008 + G37 | www.gtspec.com

Advice please! And yes, I do know about the post made by GTSpec with suggestions. I was hoping to get personal anecdotes to help aid in my decision.

 

May want to give this a look if you haven't already.
https://www.myg37.com/forums/brakes-...g-project.html

 

Thanks Blnewt. I had checked Modme's thread. It has some solid ideas/advice. Hopefully someone will drop by here and give some info based on their personal experience with these braces and why they chose each one.