1968 Hemi RR exhaust manifold heat riser

[probeafs]

Did all early (4/68 production Date) 1968 Hemi RR's come with exhaust manifold heat riser?

 

[super-bee_ski]

I'm sure this was "standard" up to 1969 and 1970...
Why?
Because I have 2 Hemi "P" and "S" marked manifolds from either 69' or 70' and they both have that provision (On Passenger riser up to rear of hemi Intake manifold)

 

[probeafs]

Thanks for the info. I am removing the headers currently on the car and putting stock manifolds back on. The right side manifold I have has a 2/65 date code P/N 2780518 but no heat riser??
I will have to find a Rt side manifold with a heat riser with a pre 4/68 date code. Also not sure if I can change the manifolds without raising the engine?