I hope you don't plan on spending that much on a brake kit.
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You can get a Stoptech ST-40 kit for under a 2k if you look around. Which would unquestionably be more than enough for spirited driving. Picking the right pad is the caveat here.
A 355mm(14") is the recommended max size for a 18" wheel. You MAY be able to squeeze a 370mm kit if the caliper is low profile (monoblock) or a deep clearance for the spoke design.
You are best going with a 4piston 355mm kit. Unless you just want the bling factor of the large 6 piston kit or are getting it for a super good deal.
Stoptech 355mm kits
ST-40 -83.488.4700.71
ST-60 -83.488.6700.71
more kits here -
https://conceptzperformance.com/items.php?c=3&p=24