PROBLEM!!!NEED HELP

OK.I am having problems for a long time now with my 01 b4 legacy auto.Theres this noise coming from the front i think?It sounds like a bag of tools and bolts being dragged underneath the car,it only happens when im driving and gets worse when i accelerate,and when i ease off it kinda gets quieter especially when im driving slow like threw a town.also when im driving about 40-50klm and i accelerate in 5th gear im getting small vibrations from under the car. I tought it was the gearbox so i replaced it two weeks ago but the problem is still there.anyone any ideas,could it be drives???

drives or wheel bearing would be the first place to look

In 5th at 40-50 km/h the car will be labouring a bit and the whole drivetrain will shudder. Change down a cog and see if it disappears. Drain rear diff oil and check for metal in the oil if not already done. And check universal joint on propshaft for play.