Sorry if I sound stupid(I certainly feel like it). I always wanted a 1986 GN but never had money to buy one. I finally saved $$ and began looking. I found listing that said "barn find GN" so I immediately thought to buy it. To make a long story short. I thought it only needed to replace dry-rotted lines n hoses but was told that the car had motor,tranny, and rear end removed at one time(don't know why) and maybe it was a GN parts car. VIN comes back with 58k original miles n 1 owner. My question to all u experts is: Do I try to just get it started or do I pull everything and start from scratch???? I forgot to say that it is not running cuz its missing things like starter,MAF,n couple other things. I do have about $2,500 to get it running. I really do want to keep it.
How does the VIN come back with xxx miles?
CarFaxc or Autcheck?
CarFax and Autocheck are notorious for not showing things on cars this old.
But never the mind.
I always roll my eyes at these "barn find ads"

Riigghht...a Grand National tucked away in a barn for 20 years.
And - please include a unicorn with the car.
Let me guess? EvilBay?
Every TR car I own has had the engine and transmission pulled - so I don't see that as some sort of fatal flaw.
And unless you are going for some Barrett-Jackson resto (which it doesn't sound like you are) - who even cares if they are not numbers matching components.
You can start to match up VINs and RPO codes by looking at the cowl tag, the trunk deck lid SPI label, the driver's side door tag, and there is a VIN stamped on the frame but hard to get to without lifting the body.
The trans and engine are also stamped with the last 6 VIN digits.
As long as the trans is a BRF, and the rear end is a G80, the engine a 109 block - you're still good.
A lot of Grand Nationals get sold as rollers - or parts cars - without drivelines- and get put back together.
No foul in that.
Why don't you take a second and breathe.
Change all the fluids; plugs, wires, etc - 100-200 bucks.
Do a spring cleaning.
Change out your 25 year old rubber lines for 25 bucks.
Clean your intake
Pull the MAF tube or pipe - and look at the turbo for play.
Check your brake system.
Do a general overall - top to bottom - check up.
Then - as Rick said - prime your oil pump - disconnect your ECM and crank it.
Then connect the ECM and see if she starts?
If she does- slowly put it into Drive and see what's what.
You might actually have a running car.
If it starts after doing all of the above - your $2300 left will be a start to the endless money pit you are about to feed.
But join the club.
Post some pictures of the overall and under the hood for more assistance.
And oh - get a Scanmaster.
Now.
You're now down to $2000..and counting