Identification of Baron

Hi all, I am trying to identify which model my Space Baron is, i would lkie to know if there is a way of telling the difference between the Baron, Baron 30 and the Baron S. I baught this kit secondhand and i dont know the model and i want to upgrade the tail push rod but need to know the model.

Thanks

Clive

[colin]

A picture will help

Here is a pic more are available