XC70 2005 Manual Gearbox

Good morning, I'm posting this thread because my Volvo XC70's manual gearbox broke down. Now I'm looking for a used one to replace it but find it hard to know which reference number to look at.
I found the label that indicates de following references: 9482372 / 566R 7002 BB / T1GG4 200705 074415. After doing some research I found one with the first two same reference numbers, BUT, the gearbox is 5 gear and not 6 gear as mine!
Could anyone help me with this? Maybe I can find the ref number with the VIN code?
Thanx