Improved Touring is a popular class,with great potential for growth! Why not make few more classes .Why try and fit existing and future eligible cars into 4 classes? Why create frustration and disparity,when you can have close competition for a wide variety of cars? Why not preserve the competitiveness of cars that members have invested so much into?It can be as simple as adding an S to ITS(ITSS) for the newer more powerful cars, or to ITA(ITAS) for cars like Greg's Nissan.
Having a chance to win is what drives this sport!
BB