Hi. What I'm working with is roughly a 2600-2700lbs small tire nitrous car, making over 2,000hp but under 2,500hp. I'm interested in ordering a carbon shaft in a month or so, and was wondering what size U joint was necessary? Any pros or cons to either size joint? I was looking at the PST 3.75 carbon drag race shaft. Thanks for any help. I can answer any questions if more info is needed.