15T Engine sprocket & 16T Gearbox sprocket for Single cylinder

[Matchymarty]

Hi all,

Am embarking on a Rigid 350cc Matchless G3L build to convert a rolling chassis to a Trials Bike.

Does anyone know where to find a 15T Engine and 16T gearbox sprocket for either a CP or B52 box ?

I want to gear it down as much as possible without having to modify the rear wheel sprocket.
Cheers.
Marty - Australia.

[Matchymarty]

EDIT:
Found a 16T gearbox sprocket from India. Hope it is ok.

Still on the hunt for a Engine sprocket.