I need the 4 cam cap studs that sit at the front on a 2wd head (M6) the thread has gone on a couple of mine and i need to replace them

I can get the rest of the studs (M8) but cant find anywhere that does the ones for the very front(M6), tried woodford etc and Ford dont do them anymore apparently.

Any one got any ideas or will i have to get some made up?

Cheers