the 5v on the bottom indicates its a 442; 05c is built during 3rd week of may; 66,1966; 3,Oldsmobile; 38,Cutlass; 17,2door hardtop; LAN,Lansing, MI; 24951 is unit production; 980 is your trim package. What type of condition is it in?
980-b = Black themed interior with strato bucket seats
C-2 = Provincial White with Black vinyl top
e = tinted glass (all)
x = automatic
c = Chrome side window sill moldings?
r = rear shelf speaker