Coming along nicely Horus. Looks like a nice clean build so far.
A company by the name of HK Creations makes a set of tracks for the Leopard, I'm not sure if there are any more out there or not though.
IMHO, I'd use the kit tracks for this build, they appear to be fairly decent and with the side skirts on the vehicle you don't have to worry about any track sag (if there is any on a Leopard).
Keep the pics coming !!
Happy Modelling and God Bless
Robert