Location Of Vacuum Reservoir On 70 Roadrunner A/C Car With No Air Grabber Hood

Trying to figure out everything thats involved in getting the A/C & Heater systems back working on my 70 Plymouth Roadrunner 383 A/C car. Have not been able to find out exactly where the vacuum system reservoir is supposed to mount.
Do not have the Air Grabber option. In the shop manual page 24-65 Figure #3 it shows how the vacuum lines work but nothing on where the reservoir mounts. Was told on a 70 Charger it mounts under the battery tray but checked mine and nothing there. Have seen photos of a Air Grabber vacuum reservoir mounted on the pass side firewall but that is on a non-A/C car.
Any help or photos would be appreciated.

thanks

This is the only vacuum device mounted in the engine compartment of a 70 B body with AC.

https://www.ebay.com/itm/NEW-MOPAR-...-VALVE-REPLACES-3441414-25-4637-/332576117663

Then why does the shop manual show a reservoir in the vacuum system? The valve you refer to may be the only part that uses the vacuum that is mounted in the engine bay but a reservoir does not use the vacuum it stores it and there seems to be some question if a 70 Plymouth Roadrunner (383 without the Air Grabber option) has a vacuum reservoir in the A/C vacuum system and if it does where does it mount in the engine bay. There are a lot of parts in and on the under dash heater- A/C box that uses vacuum to open & close those little doors (not sure what else to call them) that direct to heat/A/C to the different parts of the system and I am having a hard time understanding how they can all work without a vacuum reservoir somewhere...doubt if just the "regular" vacuum has enough strength to operate all that but I guess one never knows.....