Can't fine an arrow to line up timing marks.

nope

Without investigating the wiring diagram, my first guess would be a broken wire or bad connection. It is possible that these fuses are fed via an auxiliary supply and that this supply is not being triggered if coming through a relay/operating device.

Did you check the fuses?

Here are the 3 engines listed for this year. IGNITION TIMING

2002 Nissan/Datsun Truck Frontier Pickup 2WD 2.4L SFI 4cyl

The Ignition Timing

18-22 DegreesBefore top dead center - When throttle positionsensor disconnected and using suitably programmedscan tool.When adjusting idle speed, set parking brake & chock drive wheels, curb idle speed (750-850 RPM)transmission in neutral.

IGNITION TIMING

2002 Nissan/Datsun Truck Frontier Pickup 2WD 3.3L SFI 6cyl

The Ignition Timing

8-12 DegreesBefore top dead center - throttle position sensorharness disconnected.When adjusting idle speed, set parking brake & chock drive wheels, curb idle speed (700-800 RPM)transmission in neutral.

IGNITION TIMING

2002 Nissan/Datsun Truck Frontier Pickup 2WD 3.3L SFI SC 6cyl

The Ignition Timing

8-12 DegreesBefore top dead center - throttle position sensorharness disconnected.When adjusting idle speed, set parking brake & chockdrive wheels, curb idle speed (700-800 RPM)transmission in neutral.

The numbers stand for degrees before TDC (top dead center) on cylinder number one.

Basically the timing chain in every vehicle is set up on the following principal No 1 cylinder is at TDC on compression stroke " meaning both valves intake and exhaust are closed and the ignition rotor should also be lined up with No 1 ignition lead . On the timing chain sprockets there will be a mark on each that align or point to each other and u fit as such.
As long as u make sure your on no 1 cylinder compression stroke and cyl is at top dead centre then line up the sprockets u'll be sweet

hydraulic lifters.when they rattle for 30 secs then worry.(takes the oil a little time to get up to the cams/followers.)

You don't provide much information to go on (type of vehicle, type of engine, 2wd or 4wd, etc.) RPM is always going to be based on the speed you're traveling with a standard transmission. My 4 cyl 5 speed Nissan pickup in 5th gear runs at 3000 RPM at about 75mph.

With the vehicle sitting still, ease the clutch out just a little bit while trying to engage reverse. If it pops in, even with a little grinding, it seems the bearings on the counter shaft may be a little stiff. Have you checked the level of the gear lube in the transmission?

1) #1-4 pass side front to rear #5-8 drivers side front to rear
2) 1-3-7-2-6-5-4-8
3)#1 is usually marked on cap wires go ccw
4) TDC #1 cyl you must remove the shorting plug before timing
it is located by the dist plug or the ignition module small gray plug