440 for my RamCharger

I'd daily an RC if it wasn't for the terrible gas mileage lol. I also prefer part-time 4x4 over full-time. I love driving my D200 but it consistently gets 10 MPG, hence the 440 swap... figure a healthy 440 at 9:1 will get about the same as a high-mileage (but tight) stock 360 at 8:1 comp and won't be working as hard to push the truck around, but it'll have roughly double the HP and at least 1.5x the torque. We'll see, hopefully the Street Demon carb helps too I've gotten pretty good at tuning it.
This one is dead on 9:1, but I’m still using iron heads.My old 318 was averaging about 8mpg, and was the slowest thing I’ve ever driven. So I figured a 440 COULDN’T be worse, unless I floor it every where lol. My RC came with an NP208 Tcase, so it is part time 4x4. I also have an NP241 that I’m thinking about using.