These are our 950HP 3.5" Heavy Duty Carbon Fiber drive shafts for the Eclipse and Talon. This shaft is designed to replace the first 2 shafts of the factory 3-piece system. The front angle was 2 degrees and the back was 7 degrees (not good), the problem is the rear joint would move more than 2 times as much as the front and cause a very nasty vibration. The AE-7 manual of Automotive engineers doesn't recommend any driveshaft to have more than a 1 degree difference from one operating angle to the other (this would be a 5 degree spread). This shaft comes complete with a conversion plate for the CV end and all hardware to make this a job that can be done in the garage. This Heavy Duty shaft is rated for 950HP.