Hi Voy.
The wing slats and the opening canopy are all options that can be added to order. They are not features built into the standard sports ARTF's but can be either built in by the factory ( There will be a delay as this has to be custom done by WJM workers)
Sorry but I have not seen any listings for the separate accessories. Maybe and an email to Raymond at WJM would clarify this. So far they have been great at responding promptly to my mails. ( If you have any problmes let me know)
I also forgot to mention that if we are exporting this kit outside of the European union to a country where V.A.T is not applicable we lower the price by 17.5% so the combo price comes down to £1700.00
Regards Al