as to buying up parts and building a hemi, my one good buddy is doing just that.
he looks for bargains, then snatches them up.
he almost has all the parts for a complete engine. when done, he will be in it for cheap.
same buddy bought a 69 charger many, many, years ago for $2500.00. it needed a bunch of work, including pulling the trunk pan back into shape, and a tail light panel.
i gave him hell for spending that much for that car. he got new tin for it, and other assorted parts, an engine and transmission, and when he is done he will have a nice car, but into it cheap !
that thing would sell in a nano second for 20k today, the way it was when he bought it !
guess he showed me !