Timing Mark and Damper Location on 86 4.3L V6

[86-C10-V6]

I had my engine replaced on my 86 C10 way back in 1992 with a GM long block (108K miles). Believe it or not, I have not set the timing on the Engine since it was replaced, it currently has 168K miles. I recently tried to check the timing and found I could not see the timing marks on the new engine, since it is located on the opposite side (passenger side vs drivers' side) of the motor than the original engine.
Question 1) Is the damper splined to the crankshaft in such a way that it can be moved a small amount, say 20 degrees by removing and re-installing.
Question 2) is it possible to relocate the timing mark if I remove and re-install the damper.
I am assuming that the timing indicator is adjustable and I can set it correctly by placing the engine at TDC before I try to make any changes. I am still trying to determine if the timing chain cover will allow me to move the timing indicator from passenger side to drivers' side.
No reponse on engine & drivetrain board, duplicated here.
Thanks for any input.