I run a morroso steel mount on the drivers side with a big 5/8 inch
bolt/thead size bolt through the big hole in the k frame .
i got the bolt at ace hard ware for a couple of bucks .
the bolt is the best way to keep the engine from moving , because it will shift with stock bolt.
just run a stock rubber mount on passinger side and a poly trans mount .
This works great some vibration but not bad i drive the car all summer like this and i dont mind the extra vibration .
your friends will think the car is even more bad a$$ then it is because it make the car feel faster .
my set up is almost the same as yours 493 hemi 4sp 410 gear 69 charger with 70 pistol grip conslole shifter .
Hope this helps Cj