What starter for Birkin or Caterham with early 2000cc Zetec and Ford T9 5-speed?

[pethier]

I want to replace the starters in my 2 Sevens, but don't know what to ask for at the parts counter.  The two starters look interchangeable.

 

Do I need to ask for some sort of Merkur starter?

[Vovchandr]

We need to know what zetec you have. 

 

Likely a contour one that's vct or similar and it's going to be different than a Ford focus one. 

 

I went through this issue when I did my clutch. The car came with a clutch from a focus as a spare but it didn't work with the existing flywheel and after swapping flywheel it didn't work with the existing starter so I had to do a full conversion at that point. 

Edited 1 hour ago by Vovchandr