Outer Limits 4x4 Board

Hi all
I have just found a water leak in my motor its coming from the welsh plug on the back of the block at the top what would be the best way of getting to it as there is no room to get it out

thanks jimbo

I did mine, pulled the gearbox out as it is the only way to get to it. once the box was out it took 5 minutes to replace.

I was thinking of removing the engine mounts and droping the motor may give me enough room to get to it. its about 6 hour job to R&R the auto box I know I just put a reco one in