Yep certainly a worthwhile mod if you know how to install it, not that I ever ended up doing it but I heard it greatly improves the manual transmission.
Some people modify their existing valve with a screwdriver, ie wedging it into the valve to make a bigger hole, or some people replace the OEM valve with an aftermarket one so as to keep theirs original.
I've had a member enquire already so hopefully my one will be sold soon
