What clutch slave cylinder is this?

[PhilSchmidt]

I am new to this forum My 1973 FJ 40 has a small block chevy mated to an SM420 chevy tranmission. I built this rig from the ground up in the mid 80's and it has sit much of the time since then. The clutch slave cyl needs to be replaced but I don't know if it is an original FJ 40 cyl or a chevy item. The vore I.D. measures out to .850". Picture attached. THANKS!!

 

[Downey]

Toyota has 3 different slave cylinders that all look identical on the outside, 3 different piston sizes, so who knows???

 

[PhilSchmidt]

Do you think it is a LC or Chevy slave cyl?

 

[cruiseroutfit]

I bet it’s a 13/16” bore Toyota unit

 

[PhilSchmidt]

The one on my truck is FJ40.