Sorry Steve, had my head in the asp end of the 310 all weekend, hence no reply. No, no special tips, flip the lower wishbones off, drive the pins from the joints (at the gbox end), shafts off the g'box, g'linkage off, starter off, unbolt from engine (gbox now supported by jack or hoist), g'box mounts off.
Wheel out G'box
Putting back is reverse, and no problem if you do not change clutch, if you do then good luck with the plate allignment, the twins can be pigs.
When back use new drive shaft pins (inner and outer, which you can get from Simon, as they are the same as a 310 4 stud), and seal these off when fitted with a little silicon, or you will leak oil
Have a ball, the 310 is still spitting like a monster, so back to it for me
Cheers
M