340 x-block vs. 410 stroker ?

I got on my DOT tires right now basically the back tires and rims or off a 05 Hemi Magnum wagon there 18's with the 225 60 I can't remember. My problem is the powerband is so abrupt between 3 Grand and 6 that the rear tires never make contact with the road between these RPMs and it gets very hairy on the street.