Chevy had cross ram fuel injection in 1982 on their 305 camaros
yes if they are both throttle body engines
in the fuel inlet on the carb.
Keep in mind the #1 problem with these vehicles is fuel pumps. Most of the time the regulator is replaced needlessly.
Good chance its located in the fuel tank.
Fuel Pressure Regulator is located on the fuel rail.
It will be a 305 or a 350 fuel enjection engine ( TBI )
If it's a carburetor version, there probably isn't a regulator.
If the Buick 305 is really a Chevy 305, then the motor mounts will interchange with a Chevy 350.
Passenger side, front, lower on the motor.