[Mr70]

Here is what I was able to find in my materials:
NS-Radiator part #3025166 for 1972 Chevelle/Elco/Monte Carlo w/LS-3 402 w/Auto. trans.
CB-part #3025228 1972 Chevelle/Elco/Monte Carlo w/L-48 & L-65 engine w/Manual trans.
SB-part #3014619 1970 Chevelle/Elco/Monte Carlo w/L-48 & L-65 w/AC w/Power Glide trans.
SS-part #3017258 1971 Chevelle/Elco/Monte Carlo w/307 & 350 w/AC w/Auto trans.
RP-part #3019204 1969 Chevelle/Elco w/ H.D.cooling or A/C & Manual trans.
VP-part #3016880 1968 Chevelle/Elco w/L6 & L-65 NO A/C w/Power Glide trans.
PD-part #3017248 1970 Chevelle/Elco/Monte Carlo ALL w/H.D. cooling or A/C & Auto Trans.
CGpart #3018008 1970 Chevelle/Elco/Monte Carlo w/L-48 w/Auto trans.
CJpart #3025236 1972 Chevelle/Elco/Monte Carlo w/L-48 & L-65 w/Man. trans.
UF-part #3010176 1969 Camaro w/L-22 250 & L6 230 & A/C or H.D cooling w/Auto trans.
CR-part #3025244 1972 Chevelle/Elco/Monte Carlo w/L-48 or 307 & A/C w/Auto trans.

That CY tag looks to be for a 1971-72 Impala application.