Here's a question for everyone, is the F80 Premium Super Duty Engine Kit that you can find on thatsdax.com really worth the extra cost? I mean, I can find a Skyhawk kit for like 150-170 and the F80 Premium kit is a whopping $259. I would be willing to pay the extra money for the F80 if there was a noticeable difference in quality. Has anyone purchased this kit and is willing to share their incites? Thanks.