How huge is your budget ?
Wheels & Tires - say forged. $5000+
Exhaust - $1000 - $4000
Suspension - springs - $500+. No coilovers available yet for the xdrive
Brakes - Brembo $5000+
ECU tune - $2000+ (flash). Piggyback - about $400+
Full Body kits - if elect to go for real aftermarket ones - $5000+
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