Thanks, that's good to know.no clunk.Is there a rule of thumb as far as choosing the right gearing between rear and tranny for best 1/4 mile times.Should tires start to spin at certain rpm or is the goal to minimize spin at all cost?to no one suprise I'm a noob but would like to set car up to be as good as it can because I'm hoping to get it to the track when time and $ allows me.Thanks.Yes they were 2"