Changing out the chevy caprice heater core. . - YouTube
Heater core replacement on the 67 : r/projectcar
Replace® - Chevy Caprice 1967 HVAC Heater Core
1963-1967 All Makes All Models Parts | B2249 | 1963-67 Skylark, Impala, Caprice, Chevelle, El Camino, Cutlass, GTO, LeMans; Aluminum Heater Core; without AC; Measures 10" x 6-1/2" x 3-1/2" for Finned Area | Classic Industries
Repair Guide: G-body heater core replacement - Monte Carlo Forum - Monte Carlo Enthusiast Forums
1977-1990 All Makes All Models Parts | 3035420 | 1977-90 Impala, Caprice, Bonneville, Catalina, Electra, GM Full Size; Aluminum Heater Core; with AC; Measures 10-1/2" x 5-5/8" x 2" | OER