Well I got a 50/50 chance don't I. The single cam V8s have the #1 cyl on the right front (passenger side). The right side was 1,2,3,4 and the left side 5,6,7,8.
I'm not sure that the later V8s are the same, but, in general I can tell you that the number one cylinder is always the farthest one forward. You can look at the motor and tell which one is futher forward.
Bosch Master, ASE Master, L1
33 years MB technician