This is a cab seal kit "MODEL C3 and D series " with the large rear wrap around style rear window. This kit covers all glass seals, door seals, vent windows, cowl vent seal,sweeps, clips,ect. All part numbers included are as followed for reference (RW-166-5560, RW-115-5560-LR,RW-167-55C3,RW-5660-DS,RW-106,RW-175,RW-137,RW-101-C,RW-141-54,RW-107) RW-5660-TS sold seperate. for trucks 1956-1957