Fastback

Hi Everboby "Happy Easter" Iwas given a primary cover i think off a 750 fastback ,it has an oil take-off hole near the relief valve.I think it could be fastback because 1; i purchased a early frame off a person (frame no 135285) he also has a f/b tank & dove tail( not for sale YET).

I have also seen a fastback for sale ,it also has an oil take-off with a small pipe coming from it ,my question is ,could this be standerd or fitted later.Steve