Here are the mopar intake casting numbers from 1959 thru 1974. When reading the information below, scan left to right for each of these catagories: casting number, engine bbl, year and any remarks.

LA Engine Intake Manifold Casting Numbers   
Casting Number  Engine-bbl      Year       Remarks
2465726                  273-4           1965 
2536636                  273-4           1966 
2536536                  273-4           1966-67  
2536771                  273-4           1966-67  Calif. Emissions
2531915                  340-4           1968 
2531914                  340               1968-71  
2843683                  318-2           1969-70  
3462848                  340-4           1970 
3418681                  340-6           1970        Alum. AAR & T/A
2951185                  318-2           1970-71  
3512100                  340-4           1971 
3614025                  340-4           1972 
3671918                  340-4           1972        Calif. Emissions
3671918                  340-4           1973 
3512099                  340               1971-73  
3698437                  360-4           1973 
3698434                  360-4           1974 
3698435                  360-4           1974 
RB/B Engine Intake Manifold Casting Numbers   
Casting Number  Engine-bbl      Year         Remarks
1851898                 383-4            1959-60  
1851899                 383-2            1959-60  
2264877                 413-8            1959-60  
1827899                 383-8            1959-62  
1947162                 383 & 413-8  1961      Left 4-bbl
1947163                 383 & 413-8  1961      Right 4-bbl
2205968                 383-4            1962-67  
2206000                 413-4            1962-65  
2264877                 413-8            1962 
2402726                 413-8            1962       Max Perf. I
2129985                 413-8            1963-64  300J Right
2129987                 413-8            1963-64  300J Left
2402726                 426-8            1963       Max Perf. I
2402728                 426-8            1963       Max Perf. II
2205968                 383-4            1964 
2402720                 426-8            1964       Max Perf. III
2465165                 426-4            1964       Max II PL Short
2465185                 426-4            1964       Max I PL Short
2468045                 426-4            1964       S/S Hemi Strip
2206000                 426-4            1964-65 Street Wedge
2468043                 426-4            1964       Hemi NAS Track
2536900                 426-8            1965       S/S Hemi Strip
2531631                 426-4            1965       Hemi/Holley
2946278                 426-8            1965       Hemi/Holley
2531921                 426-8            1966       Hemi/Holley
2780543                 426-8            1966-68  Hemi/Carter
2780544                 426-8            1966-68  Hemi/Carter
2206000                 440-4            1966 
2780543                 426-8            1967        Hemi/SS
2780544                 426-8            1967        Hemi/SS
2536900                 426-8            1967        Hemi NASCAR
2806178                 440-4            1967-69  
2806301                 383-4            1968-69  
2536900                 426-8            1968        Hemi/Holley
2780543                 426-8            1969-71   Hemi
2780544                 426-8            1969-71   Hemi
3412046                 440-6            1969-70   Edelbrock
2951666                 383-4            1970-71  
2951736                 440-4            1970 
2946275                 440-6            1970         Early
2946276                 440-6            1970-72  
3512501                 440-4            1971 
3614046                 400-4            1972
3614014                 440-4            1972
3671879                 400-4            1973
3698444                 440-4            1973
3698442                 400-4            1974
3751728                 440-4            1974