I have seen most photos of SR tach drives mounted to the timing cover. In one book I saw a tach drive mounted to the oil pump fitting where the book said that was a very good way of identifying a SR or RGS.
When the time comes I find a tach, what's the preferred place to hook it up to a '58 SR?
As the bike has the nacelle headlight speedo, thanks for any comments on what tach to look for also.
Steve