I just had my 2004 4 speed auto ute tuned. It pulled 309 rwkw. with my gtech I did a coule of quick 0-60 mph runs which the best was 4.8 seconds (34 degrees, very hot day) With this sort of power what could I expect to run down the quater. Is it true that if I had the same power behing a zf 6 speed that it would be a quicker car?