The folks at Kimber can easily make you a tonearm Cable for the SME 4.5. Note the that the standard cable configuration makes the cable end come out at a horizontal plane to the table, it need be oriented at either 3 or 9 o'clock (cannot remember, will update once I check my files) to make the cable protrude downwards. Graham tonearms are opposite to get the cable to exit downwards.
Best of Luck
Peter
Best of Luck
Peter