91st Bomb Group, 324th Bomb Squadron:
8 ★ 91BG 324SQ
...and the rears
Left
8 ★
91BG
Right
324SQ
8AF airfield-based vehicles don't often seem to have had individual numbers most of the time for some reason.
However, a radio-equipped jeep assigned to the 323rd Bomb Squadron at Bassingbourne had the following bumper marking:
8 ★ - 91BG - 323 - 16
For more Bassingbourn-based 8AF units:
8 ★ 1 SCS (1st Station Compliment Squadron, responsible for operating the airfield itself)
8 ★ 39 SV 364 SQ (39th Service Group, 364th Service Squadron)
8 ★ 441 SD (441st Sub-Depot, formerly the 39th Service Group and it's squadrons)
8 ★ ASC 441SD (a valid variant of the above, showing the 441st correctly as a unit of the VIII Air Service Command)
8 ★ 1204Q (1204th Quartermaster Company)
8 ★ 1696-O (1696th Ordnance Supply & Maintenance Company)
All the best,
PB