@suhaibkiani. Yes boss your stock is of 421.
@aghaomer. I have never seen single 404 in pakistan. There is one 435 but you will never get its axles because its running good and not going to down.
If you have seen some pirate4x4 threads of axle conversion then I tell 421 Pakistani version is your only choice. These axles are fast in comparison to 421 variant abroad. I have shared axle ratios chart previously here too.
You are welcome to share what you want to cook with these axles so that we can be precise.
Happy Mogging