gearbox rattle

[killahcrow]

hey guys i have a question that has been bugging me. I have a vy ss with a manual transmition. I have a rattle comming from my gear box when i reach around 2500 rpm. I know it is coming from the gear box because i had it serviced at the dealersip last week and they told me thats were its comming from but were going to charge me to pull it apart. Does anyone have any ideas what could be causing this?
cheers

[hN!]

I had this problem But mine is auto ended up being the gearbox mount I thought it was inside the gearbox. Id get a second opinion