You need the gearbox, clutch setup and brake pedal clutch cylinders, ecu, manual loom, flywheel bolts etc manual sandwich plate
manual bush and so on. Theres quite alot involved. I am unsure if the driveshafts are the same. Definately easier keeping 4wd as you'd have to remove/block the attessa. A waste not to keep it. Either way even if you get parts second hand and do the work yourself your looking at at LEAST 1200 likely more however
Gearbox $500
Clutch flywheel etc $350
Clutch and brake pedal $100
Cylinders $150
And that's not everything plus very conservative prices for most.