with all the research that speedy and i have done on a one piece driveshaft using regular u-joints. cost around $500.
I am going to stay with the factory set up.(1 )the flex-disc must take up some of the torque from my V8 (2) it if is in great shape it takes up a lot of the vibration. (3) with the amount of runs i have on my car and the driveshaft from the srt6 has not failed i am staying with it. thanks speedy for saving me money. (4) i'm getting too old to keep making changes on my car that cost money,,it runs great the way it is ,, one of these days i will want to sell it, anyone wanta go fast call,,pm or email me. jim