Hello. I'm new to this forum. I own a 1991 240sx se. its all stock right now. what should i do to it first?

 

welcome, fix anything that is wrong with the car.

 

Very opinionated post. You can probably have 50 people tell you 50 different things. How much money is at your disposal? Welcome

 

If you've had it for over 3 years:
welcome. maybe you can upgrade a little here and there to bring life back into the car =)

If you just got in within the last 3 years:
fix anything broken, don't go sr or rb or s15 front until you learn how to drive it

welcome to the forums =)