GSR BOOST HELP
 

I am looking to buy this car and want to know if the motor will still be good.

Bone stock JDM GSR with around 50k T3/T4 garrett dyno tuned at 10 psi. i know the shop where he got it tuned and they are best in town.

its been 20 ks since the motor and turbo setup.

What should i check when i go to see the car?
What kind of compression numbers am i looking for in a compression test?