Sorry, can't find that one. If possible, give me the system name.
Or go to
https://eddb.io/station, enter the stuff you want on the top right (i.e a 2H Planetary Vehicle Hangar - the 2H alone should be enough for the script to complete the search), then go to the bottm left field and enter the system name you're currently in (again, the script will try to autocomplete - but since there are so many systems, this may take a while). Then hit the "Find Stations" button bottom right.
E.g.:
Oh, and the Hangar goes into an "optional internal" slot - usually size 2 (one SRV) or 4 (2 SRVs). Larger ones are available for correspondingly larger slots. So you might need to drop a cargo rack.