Getting Ready for the Magnum Swap. (help?)

So I am trying to get a parts list together and trying to figure out how much I need to save to do this swap. I already have a 5.9 Magnum engine and 518 Transmission pulled out of a 96 Dodge 2wd truck. Any help or advice will be appreciated.

1971 Plymouth Scamp "I just want a cruiser"

This was a /6 Scamp but I have a 73 parts car that has V8 K-member and disc brakes that I will be rebuilding and swapping in.

List of parts and estimated prices
1. Intake RPM Air Gap $350.00
2. Carburetor "Not sure what to buy on this one"
3. Oilpan "Not sure what is best/cost efficient on this as well.
4. Distributor "Not sure on this one either"
5. Headers "There are so many different opinions on this I'm lost"

I'm not a mechanic but my best friend who is helping me is. I'm just trying to get as much information as possible on what I need to buy before we get started. I have read so much that it just gets confusing on what is the best way to do things.

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