The X-30 is a great boat, we love it. I only have the 5.7 in mine and it pulls around my 4500lb boat and 2500 of ballast nicely when there is bow weight. Make sure to get the trim tab as mentioned above. Here are some pics of the boat & wake.
2013 X-30, 6.0L with 2500lbs of ballast and 500 lbs of lead.