there are a  malay operated garage shop in subang 2, they sell many of the rare nissan part, you can call them for used part.if you needed to find something

Recommend to replace all rubber hose and water metal pipe that located underneath the intake manifold, these things not worth to save money.
You might not find all the direct replacement hose, can get it from part dealer to find similar size and curve, cut it to fit.
All the oil seal and oring advised to replace when the engine undergoing overhaul.
Skim the flywheel if show uneven surface.
For the driveshaft boot, dont use cheap brand, recommended to replace it with seiken brand which you can find in jalan ipoh.
You are good to go.

Mine is not overhaul but just engine leaking for my 13 years old Avanza 1.5cc

Change items
1. Flywheel oil SEAL
2. Timing chain GASKET
3. Fuel pump gasket
4. Head gasket
5. Oil Pan gasket
6. Ignition coil plug
7. Plug

Labour RM700. Cheap?

Fuel pump gasket? Wtf
Car got petrol smell? Does recommend to replace the pump if mileage exceed 100k.
Fuel rail does have some seal can be replace to prevent vaccum leak.

Oil pan use gasket glue

P12 Sr20ve 20v use coil on plug, i doubt he actually change it which you almost impossible to find in local, unless he got manyak lubang.

NGK iridium spark with 7 hot range should good enough.

Meter has been tempered.....any reason why u bought it even though it has been tempered?
Previous owner ur friend?

I check 3 shops d all quote labour not including parts at 700.. Any cheaper shop to recommend?

You could have bought a Mercedes GLC250 with the money spent on old cars.

After overhauled, still an old metal scrap.

U got it wrong, he is not driving a sr20ve. Lol.
My coil on plug already change to distributor type. Kinda a downgrade but thats what the car is when i took it from the previous owner. I am using ngk iridium with 6 heat range.

Recommended to send the head to machine shop for clearance adjustment instead of hand adjustment which some foreman use knife grinding stone to finish the job, no good.
Unless he manage to find genuine nissan shim to do refit.
Machine shop charge around rm20 per valve.

If the previous owner still use the original dual mass flywheel, its gotta be expensive to fix when it goes bad
If im not mistaken, the clutch plate for this 6mt is quite rare. Maybe thats the reason you rebuild it

U got it wrong, he is not driving a sr20ve. Lol.
My coil on plug already change to distributor type. Kinda a downgrade but thats what the car is when i took it from the previous owner. I am using ngk iridium with 6 heat range.

wow, why previous owner changed to distributor ignition?  would you revert back?

I dont like old mercs.

Try ask him to usd high grade silicone gasket maker, timing chain area is prone to leak if the foreman use typical grey color stuff.
Original toyota gasket maker is quite good but expensive.

Going to change all exhaust valve because he said seating a bit off. He said wont reach rm20 a piece. Around 16-18 like that. Intake valve he said no problem.