You could leave it on the car for bragging rites.That manifold will not go bad. Leave it on the car. If you want to buy a cross ram manifold set up with correct carbs and linkage and parts it will probably cost you around 10,000 complete. They are out there from time to time but BEWARE! Contact Jerry MacNeish at Camaro High Performance in Maryland for some advise and consultation.
Good Luck! Sam