V100 sport 3 speed to 4 speed kit question

Hello I wish to fit the CIF upgrade kit to my vespa V100 Sport

http://www.sip-scootershop.com/main/base/Details.aspx?ProductNumber=134907j0&_language=en

 

I would like to ask if I can still use the existing selector ( The box under the case where the cables connect )

Will it still work to change gear ?

Regards Mike

 

[:D] many thanks Werner for your reply...

Regards Mike

This kit contains everything you need.

The box under the case is not the selector, it's only purpose is to connect the cables.

The selector is this kind of "claw" (black metal part) which you see on the picture of the conversion kit).

right?