Early 900 exhaust bungs

[900Rebuilder]

Hi All

I've got a set of Silmotor headers for the 900 which don't have the sensor bungs in them. When I contacted Silmotor they said that's correct you just use your old ones. Well after trying to remove them I had to admit defeat and give up.

I then measured them and bought some metric ss ones off ebay which don't fit. Looking on ducati website they are pennies new which isn't problem however if prefer some ss ones to match the exhaust. In the part description it uses the term 1/8 and now I'm wondering if they are actually an imperial size...

Part number 78010091A

Anyone know and if so where I can purchase two that will fit please?

Cheers Ben