Timing Mark change

My '68 340 Cuda had the timing mark on the passenger side using a tab. I rebuild a 1970 340 which has the timing mark on the drivers side, and is now covered by the driver side outlet from the water pump. I want to install timing tape with the TDC mark correct for the passenger side timing mark. Does anyone know how much offset in degrees or inches there is between the passenger and driver side marks. All new dampeners are set up for the driver side case marks.

I found on BHS that the Driver Side timing mark is 7° CCW from the key. If someone knows the offset from the key for the Passenger side mark, that would allow calculation of the total distance between the two marks.

Thanks,
Bob