Honda xr500r piston recommendation

[171steve]

Hi guys we are busy rebuilding a honda xr500 any advice on what piston to use as you dont get genuine ones anymore.
Seems like the two options would be wossner or weiseco and where would be the best place to buy

 

[al_bundi]

 

[al_bundi]

 

[171steve]

 

[milesbowker]

 

[171steve]

 

[DR BIG 750]