I ordered it in April and I got it today. The speedshop told me that they were B/O from Ford cause they had some issues with the previous batch.. Anyway I was just wondering how much stronger they are compare to the stock one ? Is there any rating ? Not that I'm affraid to break it but I'm just curious and I'm sure some other Stangners would like to know too.. Install was pretty simple all I needed was 2 ramps a 12mm wrench and some locktite ,if you're using a wrench (close end ) a floor jack will be handy cause you may have to lift the rear end to spin the driveshaft to have access to the bolts on the top , I did not have a 12mm 12 point socket so the wrench was my only option but it worked out very good . 1st I backed my car up on the ramps. I took the time to weight them in case if some of you are wondering what is the difference between the two. The aluminum Driveshaft weights 14.30 LBS. Man the stock one is ugly... The stock one weights 20.60 LBS so there is not much difference.... The aluminum Driveshaft is bigger than the stock one and there is more meat where the "T" is. I know we don't look under the car everyday but the stock one is very ugly rusty looking... It was tough to fit the front part in the tranny cause my car is pretty low and it was tough to have access from the side.. Locktite is a very cheap insurance so make sure you have some. That's it I'm done , I haven't look how long it took but I guess around 45 minutes to a hour.. Next time I go under my car I'll double check the 4 bolts just to make sure they are still torque right.