Cab - Google "engine masters gen 3 hemi" and it's in the pile of videos.

Short version: early 5.7 was markedly weaker than the later Eagle-head version, roundabout 80-some HP & TQ.
Both test engines were modified, early was carbed, later was OEM EFI.
Bottom line: grab an Eagle, the price difference and output are a better deal, and the Eagle's a lot stronger too.