Just got it install today. I upgraded to motorsport bolts for engine mount bracket too. The driver side is PIA. Took me most of the day going though underneath the car.
Love this mod. Just like others commented here. I tested 1st>2nd after warming up the car. I didn't get any grind at 6k or 7k. You can definitely shift faster 1sr>2nd. I only drove it for about 15 miles but will update if any changes.