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Timing chain alignment marks: Both outer marks at 3 o'clock when facing them, and 12 pins of the chain between them. FYI, this is
not # 1 TDC
image attached below
Valve seats: If hardened seats weren't installed and you're planning on driving the truck a pretty fair amount, a Lead fuel additive could be helpful.
Zinc in the motor oil: It's a good thing, see this link...
https://www.ctci.org/gilsgarage/EngineOil.php
For ease of maint and a more stable spark at higher rpm's an electronic ignition conversion kit that replaces the points is suggested, but may not be overly necessary. IMHO
.