EngineMasters Episode 21 408/410 stroker w/ported heads
That was the video from Bryce Mulvey's website back then, not from HRM...to my knowledge.
And another funny thing I noticed: those Eddy heads supposedly were ported by Dulcich as said in the
recent Engine Masters show, but the images from Mopar Sam clearly show that they were done by Dr. J
--> B. Mulvey (see cylinder head flow chart).