A trio of McLaren racecars will tackle endurance racing competitions over the course of the next year. Last year we saw the McLaren MP4-12C GT3 racer hooked up with Gulf racing livery and this year we have the same British racing-spec ride given new looks thanks to two teams.Dorr Motorsport from Germany recently unveiled their pair of MP4-12Cs at the McLaren showroom in Klassikstadt, Frankfurt. The team will field both black and orange MP4-12C GT3s in the VLN Endurance Racing Championship and in the famed ADAC 24 Hours of Nurburgring race. United Autosports revealed their MP4-12C GT3 at the McLaren showroom in jolly ol\' London. The white racecar made its appearance in front of such notable figures as McLaren Automotive chief Ron Dennis and F1 head Bernie Ecclestone. The British team plans on racing their new GT3 in the Blancpain Endurance Series.Check out the gallery of the McLaren MP4-12C GT3 models\' respective debuts below.