Crzykdd

Where did you source yours from? (if you dont mind me askin...)

RazorLab

iTrader: (8)

MAP if I remember correctly, then upgraded the springs in the rear.

alpinaturbo

iTrader: (5)

I will suggest that if you are setting the car up for track performance, that I found the 12/14kg spring rates on Ohlins (revalved ideally) to be the start of magic: 10/12kg is like starting point, but 12/14kg really flattens the chassis, is like the start of "magic".

10/12kg is like "the most we dared" to try to keep it civil, until we found out that 12/14kg is hardly different in comfort on quality coilover, while somehow giving that "magic support" we were seeking all along.

Also, on track you do not want to go on some real street tires: they will get greasy and loose very quickly and be no fun.
NT01 is one tire that simply works everywhere and until totally dead, and is reasonably priced. For true value and really respectable grip level, NT01 is your best choice.
RE71R is a high grip tire that will overheat after few laps, substantially reducing grip level: it is cheater tire for 2 laps doing time attack.
NT01 is like endurance racing..but can be road driven, and will last quiet long time. Value.

Make sure you do run aggressive camber, -3.5 on front and -2.0 on rear. Front camber is must to not roll the tire over.
Figuring out how to "quickly adjust camber/toe" for track-event would be great endevor, as on road -2.0 front and -1.5 rear is about right to avoid chewing tires.

Also, run slight toe out on the front, its surprisingly helpful in turn-in and reducing entry understeer.
And without downsides frankly . Tiny bit..1/32" or 1/16" is all you need.

Good luck.

Crzykdd

https://www.maperformance.com/ ?

RazorLab

iTrader: (8)

Yes