Heater Core, 2-1/2" thick core size. All 6 cylinder and SB without Factory Air Conditioning

Heater Core, 2-1/2" thick core size.
All 6 cylinder and SB without Factory Air Conditioning.
Please read note below.

Notes: It has come to our attention that some 68 models may have a 67 heater core in it.
A 67 heater core is 2" thick and a 68 heater core is 2-1/2" thick.
Please check before ordering.
If you need the one that is 2" thick, order part# 399086.

Fits:

Camaro 1967

Camaro 1968