5.7L Hemi into a 74 Duster, Front suspenion questions

I think mustang II is a generic term to this style of suspension. The aftermarket has been upgrading this design for many years.
I think most people building a modern hemi project are generally wanting to build a pro-touring style car with power steering ,fuel injecton, a/c ,handling like a newer vehicle ( not even a firm feel type gearbox would match the response of a modern rack and pinon)
There is no advantage in putting a modern hemi engine in an A-body unless you are after driveablility.
If you could drop it in a stock style suspension and keep your power steering then it would be a no brainer.