good shop for inspections and diagnostics

I’m going to buy a car with a swap’d sr20det in it…the thing is that the car does not run, owners says to me that the car has been sitting in the garage for almost a year now. He told me all it needs is a fuel injector cleaning, fuel filter change and oil change.
I really need some help and opinions from you guys. Where is a good shop to go to get a inspection done and to run a diagnostics on the car. I don’t want to buy the car and be screwed over because its completely messed

Then buy mine. Anyhow, autodream in Calgary would be a good choice.