I found a site that sells the headers

Racing inovation and supply, Google it
Then on left click on 440 mopar

189.99

They worked on my B body pritty good.
Not shure if they will work on other stuff

As for carb work I can tell ya what I did and give numbers but I will only lead the way LOL
I don't want to be responsible for anything.

I know on the dyno I had to change metering blocks to get the brake specifics and O2 rite