340 street hp

I think your combo sounds good, only comment from me is that headers will increase your torque about 40 pounds throughout the rpm range....

Yeah, I know headers will help.
I already have a new set that I got in trade a few years back.

I just have this horrible memory burned in my head by a set of black jack headers I had on my first duster, denting the drivers header to clear ps box, bottom ended up smashed after a couple a months, constant leaks.