So many engines...

Hey guys, over the past year I’ve been gathering all these engines for my 1973 Plymouth Duster to replace the slant six. Now that the slant six is in need of a rebuild I thought I’d throw in one of my v8s. I’m just looking for some opinions or input on what you guys would do. My budget is pretty flexible.

Here’s what I got
1 1976 motorohome 440
2 383s one is a magnum
1 1971 318

I’m really looking to make around 450 horse with a good amount of torque to match. I used the car as a daily driver, but now I’d like to make it into a street brawler that can take abuse and I can drive often.

I like the 383s cause I think they’re a really solid engine that can take a beating but 450 hp seems a little radical in a 383 for street driving, I’m not sure.

For the 318 I have a small block intake for a 6-71 roots blower and the blower itself. I also have a 273 steel crank that will bolt right in, not sure about what pistons to use but definitely some aftermarket forged ones.

As for the 440 I have no clue what to do, the low compression 440 seems like it would be good with the 6-71 blower. Or the much simpler route of getting better compression pistons around 9.5-1 as I’ve been told many times that a hot 383 is like a breathed on 440

I already have a 8 3/4 rear end and mounts for each conversion so I’m not worried about any of that.

What would you guys do, any other different routes you would take?

And please don’t say do a 408 stroker, heard it a thousand times lol