Model 8 firing pin 1st Issue ?

i am looking for the firing pin ,my pistol is a first release with the internal extractor that holds the breech block in . My pin is one piece .od .156 necked down to .098 and that starts around .880 from the hammer stricking face and the notch for the extractor starts at.135 from the same hammer face and is .278 wide . I dont have an over all lenth since mine is broken . I relieze this would be hard to find but if someone could tell me the over all lenth i could make my own ,or even just how much of the pin sticks out of the breetch face on someones existing gun with out having to take it apart since its a pain and the extractor is so fragile would be good enough for me to figure out the pin overall lenth . Thanks , G