My 69 + 68 Cuda Flat faces the Engine . Also my Factory 1968 PLYMOUTH Service Manual , Picture on PAGE 0-16 shows the FLAT facing the Engine . Same 0-16 Page in my 1969 Plymouth Service Manual . I'm sure it's in More places in the Service Manual . Ronnie
My 69 + 68 Cuda Flat faces the Engine . Also my Factory 1968 PLYMOUTH Service Manual , Picture on PAGE 0-16 shows the FLAT facing the Engine . Same 0-16 Page in my 1969 Plymouth Service Manual . 
I'm sure it's in More places in the Service Manual . 
Ronnie