That's a good kit and the price is pretty decent actually.
Keep in mind some places don't give ANY tech info with their kits. TCI, Bulkpart, etc aren't selling youa kit and then answering your questions when you build it and don't know why they sent you a certain part or how to reconfigure the 3-4 clutch pack, or what clearances to set it at, etc.
You'll spend at least that much putting together the same parts from Bulkpart as you would from Dana (website in first post) or me, and you don't get any tech.
Dana's kits and tech are excellent.