Alright, I did all my suspension work at the same time. I put in a 8pt cage, subframe connectors,90/10 front,50/50 rears, Eibach drag launch spring kit with air bag. Ford racing uppers and Lakewood lowers, non adj. It has Convertible motor mounts and a stock transmission mount. I have a UPR drive shaft loop, just to give you a idea the drive shaft you can put almost a finger between the top of the loop and the driveshaft. I have beaten the tunnel with a hammer to see if I can fix it. Driveshaft is hitting in the center and the end of the driveshaft. Not hitting when the car is still, just when you launch it and shift gears under full throttle. What is up with this. Thanks for any help. Scott