manifold info

Would like to keep it stock as it's a numbers matching car, with build sheet, bill of sale ect. 8Ok miles and supposedly their wasn't many produced with the 360 in 75. Less that the duster 360's so I'm not sure. I know this era car is a smogger but most I've seen are in fact the earlier models with other motors. I realize the 73's with 340's would indeed bring better money, but still I think this car is somewhat worth keeping it somewhat stock, don't know. Thanks for the manifold numbers, will see if they are the same as the 74 models years.