Vette seems choked out
 

1991 Corvette L98 is having an issue.. I was told it wasnt running.. My initial thought was it wasnt turning over.. Found out yesterday it turns over and is driveable.. But once the motor is warmed up, it acts as if its being choked and wont go.. Everyone suspects catalytic converter.. But curious if its anything else.. My grandpa is gifting it to me so I want to have a good idea where to start when it's in my hands..