Please don't kill me...

Darthomas said
A 3.5 L six might getcha 37 mpg and fit easier than an 8.
7 1/4 inch rear won't survive anything more than the original amount of power for long.

i dont know about that. I had a v6 magnum for about 6 months, sold it, but it barely got 20 mpg..... my dad's r/t 5.7 magnum got 18.......