1956 dual quad 2x4 set up
 

Hey, im new to this forum i got a couple questions. recently my grandfather passed and when the family was cleaning out his shop i came accross what i believe to be a 56 dual quad set up. I will list the numbers off the intake and carbs. Intake 3731394 Carb 0-049 6-1114 Carb 0-049 6-1151. Carbs are complete with factory 2x4 linkage, choke, fuel line with fuel filter. Intake has no stripped threads and no heli coils it has the factory oil fill tube, thermostat housing, coil bracket, and dist. hold down clamp. It has 2 air cleaners one on each carb, on the top of the air cleaner it has a piece of paper saying corvette 2x4 intake/carb/air cleaner set up off Jims 56 corvette car. Removed June 12 1963 at Indy race way. The writting on the paper looks to be my grandfathers writting! Now my question is are these worth anything? what would this set up be worth?
p.s i am not selling this set up because it is the only piece my grandfather kept from his classic/muscle car collection.