REA plug lead ends
 

I have a set of REA HT leads and a couple of the covers are split and more annoyingly the coil pack ends have the drugs missing. I can see these are a pop out part as shown below. Does anyone know where I could get replacements if these ends are maybe used on something else I could take them from?
Thanks for any pointers!
https://cimg2.ibsrv.net/gimg/www.rx7...5d4c9bbc7c.jpg
https://cimg3.ibsrv.net/gimg/www.rx7...439e46fb67.jpg