Hemi 360?

the hemi was not a wedgeblock,it was the first overhead valve V8 from mopar. later in the sixtys the first 426hemis war built on something similar to a rb block but with diferences the plan was probably to make it work with the old rb block without to many changes,it did now work.
there was a company called rod and custom machine some years back that made hemiconversions for smallblock mopars, kind of expensive and not to impressive flownumbers.

if you are realy bent on 360HEMI get a newstyle 5.7 get a custom stroker crank and call it a 360HEMI if you want or destroke a 426,or overbore an old 354hemi.
none of these options make any real sense.