Angle drive

[Foofighters 27]

If anyone could help me with this I would realllllllly appreciate it ,here goes ,my odometer is running backwards ,when she is in reverse driving backwards the needle on the speedo is working ,Ive been told that I need an angle drive ,could anyone tell me if this goes behind the speedo ????help,also I have a small oil leak ,it looks to be coming from around the bottom of the flywheel again help!!!!
Many thanks mark