Where to find a petcock for 20mm threads?

[rrredisk]

I have a 78 CB750F and I need a new petcock for it. the threads coming out of the tank are male 20mm. Does anyone know where I can get a petcock with the female 20mm threads and preferably with the exit port on the right side when looking at the petcock straight on? I have searched all over the internet and it appears that the OEM petcocks for the 78 cb750s can no longer be found, so an after market one will work just fine. This is pretty much the last piece to getting my bike put fully back together and on the road again so any help would be much appreciated.


Thanks

 

[iamvalid]

Did you ever figure this out? I'm looking for one myself. I'm thinking a 13/16 right hand petcock made for Harley will work. This is the closest thing I have found without having to add adapter nuts to a 1/4 inch petcock.