[TR] Mark 1 stag tranny compatibility

[Randall]

> Is the mark 1 stag transmission able to be swapped into a 
> TR4A without modification?   If not, what parts need to be 
> changed to suit the 4A?   

The Stag input shaft is quite a bit longer and would have to be changed.  

I'm not certain offhand if other changes are required, seems like maybe the rear mount is different and the speedo drive
gear/attachment; but maybe that only applies to the Stag J-type.

Randall