6Op as others have said. Do it, its going to be the best bang for buck performance upgrade. Please careful buying the box. Both the box's share the same code S80.

Many people don't realise it. (yes c7 is a great engine)

The b18c2 isn't that many hp off the b18c7, but it 'feels' alot more sluggish etc etc cos the box of the c7 is fooking amazing.

Honda gearbox's only get the shadow of the fame of their motors.

But then again, just carefull what your buying, cos for that much mulla you could rebuild your current box instead of buying an unknown box.