2.3L for the Stivo ;) don't know where he got his figures from... I'm enjoying the Penrite 10 tenths I put in my gearbox... feels very light but when cool it is still a bit stiff on the changes, but warms up quickly. Gear oil also actually benefits from a bit of age and wear so the guys who change it every service may be do more harm than good... <_< EDIT: on another note, I tryed my 1st 1-2 change tonight after the upgrades... being wheels, lowering and exhaust... landed @ 6000RPM right on the money 1st time!!!