for the transplant you will need :
S12 gearbox
flywheel/clutch
insert a new spigot bush into the flywheel end of the crank
clutch pedal, clutch master cylinder and slave cylinder plus make up the lines.
you maybe able to use the auto prop shaft (have to check it fits a manual box)
have to adapt the auto box mount to fit the manual box
then you would need the interior piece around the gearstick
then unplug the auto brain which is inside the NSR 1/4 panel
