The sport has a ton of features! The brakes and suspension are what made it for me. I'm similar sized and getting used to my sport seats.
http://www.infinitiusa.com/g_sedan/spec ... tions.html
* Split 5-spoke, 18 x 7.5-inch aluminum-alloy wheels with 225/50R18 W-rated summer performance tires (front), and 18 x 8.5-inch 245/45R18 W-rated summer performance tires (rear)
* Sport-tuned suspension
* Viscous Limited-Slip Differential (VLSD)
* Sport brakes with 4-piston opposed front calipers with 14-inch rotors and 2-piston opposed rear calipers with 13.8-inch rotors
* Sport front fascia, side sills and unique headlights
* Solid-magnesium paddle shifters
* 10-way power driver's sport seat with manual thigh extension and driver's power torso and thigh support adjustment; 8-way power front-passenger's sport seat
* Unique sport stitching on front seats and steering wheel
* Aluminum pedals and footrest