Nissan's much respected 370Z receives a mid-life update, but the changes have mainly been kept to a minimal.Exterior updates include a refreshed front fascia with vertical LED daytime running lights, a red reflector added to the rear fascia, revised 19-inch aluminum alloys for the Sport Package, and newly restyled standard 18-inchers for the base model.The Sport Package also offers red-finished brake calipers and Euro-tuned shock absorbers. The interior also receives dark-finish fuel gauge trim. Along with two new exterior colors, changes are apparently minimal. The NISMO Z buyers will also be treated to a new Bose Premium Audio Package with two additional speakers and two subwoofers. Engine offerings remain unchanged, with the 332hp 3.7-liter V6 coming standard.It can be mated to either a six-speed manual or a seven-speed automatic slushbox. The NISMO Z, however, produces 350hp and 276lb-ft of torque thanks to an exclusive H-configured exhaust system design, muffler tuning and optimized ECM control.Overall, we like the exterior changes, though Nissan seems to have toned down the front fangs in favor of the vertical light design, a la the 350Z.Official pricing hasn't been announced, but we don't expect any drastic changes.Although Nissan wasn't confirming anything a few days ago, we suspected they'd be unveiling the facelifted 370Z at the 2012 Chicago Auto Show. And we predicted correctly. For 2013, Nissan has updated their infamous Z car that should breathe a bit of fresh life into it until the next generation arrives.But hold on to your Z-loving heads there; the changes are not all that extensive. Scheduled to go on sale in the US in June, the 2013 370Z will once again be offered as a Coupe, Roadster, and NISMO Z.