1997 Merc 4.3 V6 LXGen+

[Lou C]

looks like the newer engines did away with the time honored timing tab on the old tin timing chain cover, what they have now is kinda like what Ford engines always had so you really need the timing tape....
the old set up was easy to use after you cleaned off the grease lol.

 

[nola mike]

Or,
https://www.harborfreight.com/timing-light-with-advance-40963.html

 

[Blorton]

Or,
https://www.harborfreight.com/timing-light-with-advance-40963.html

Nice! Especially if you have one close by in case it has an issue.