2017 Mustang GT PP Whipple stage 2, Borla, GT350 Base Dampers, FP GT350 lowering springs and sway bars, delrin bushings, etc. I am having a serious lack of traction with the Whipple installed on the stock 9.5 rear wheels so I ordered some o fthe 19x11 EC-7s. I plan on using either a 305/30 or 305/35 Michelin tire on those. I only purchased two because I'm not sure what to do about the front and wanted to test fit one of the rear wheels on the front... I don't see a lot of GTs with the 305 square setup. I was thinking of using another set of 11" wheels up front but I think Ford used a 10.5 wheel on the Level 2 PP in 2018 because of the clearance issue. I have been told these cars are night and day with a square 305 set up. What do you guys recommend?