727 poly engine transmission

Back in the day people referred to the poly engine as a wide block because they looked wide. The first modern A poly engine went into a 55 Chrysler @ 303cu.inch, the Desoto in 56' and then the 56' Plymouth 277 cubic inch 180HP engine. That engine was bumped to 318 for 58' in the Plymouth, and the dodge version went to 325 in 57', both as a hemi and poly. (different bore and stroke than Plymouth) they weren't the same engine. Back then Chrysler, desoto, and dodge Made their engines in either hemi or poly head, but no hemi head for Plymouth. It would be too much to go into here to describe them all. leave it to say by 1959 the Plymouth engine survived. So yes the early engine has the same transmission bolt pattern and crank hole etc as the LA 67 up 318/340/360 engine.(exclude 64-66 273) In 1960 both dodge and Plymouth used the same 318 engine. Chrysler went to the BB/RB engines by 59. I could put the 66' poly in my 56' and motor on if needed. Sorry to drone on,,,