B2600 clutch slave rod lengths

[Lunacy]

Hey guys
Just bought a new clutch slave cylinder for the b2600 box im using, but it didnt come with the rod which pushes the clutch fork.
Ive got a miata one which is similar, but too short.
Anyone know the length of the b2600 one i need so i can get the miata one extended, because i cant find a b2600 one brand new or 2nd hand in New Zealand for money nor love.
But if i have the length of it can easily modify, or make a new one.
Cheers