Hello scotty how you doing. I have a 2001 ford mustang gt with a manual transmission and when i press and when i let out the gass it makes a clunk noise. I can hear it coming from around the transmission. Do you have any idea of what it could be?? Thanks

Have the driveshaft u-joints checked as well as the engine and transmission mounts. Be sure the slip yoke on the driveshaft fits snugly on the transmission's output shafts as well.