It doesn't start and they can't get it to start normally. Period, done, end of assessment.
I'm with tcoat, it's worth <$5k until it starts and operates normally and then it'd be a beater, not 'look at my super nice FRS that I secretly got for chump change and fixed up on my own'
You're looking at $5k-$10k to get that car looking fresh as a daisy and it will never ever be worth what you put into it because it will always carry a salvage/rebuilt title.
But for $5k investment to sort out the powertrain and prep it for street/track/autocross duty, lets go racing.