Magnum Intake on LA engine?

With all the "clunkered" vehicles, I wonder if there is a wealth of good engine parts. Specifically, can a 1990+ intake manifold fit an LA engine?

Dumb questions:
1. Are engine parts available or did they shred the whole car? I don't see much on ebay. Haven't inquired at yards.
2. I know little about later engines. Poking around, it looks like 5.2/5.9L Magnum intakes may match LA heads. It looks like later 5.7/6.1L Hemis bolt to a horizontal surface and wouldn't mate, unless a part I don't see.
3. I know intake bolts are a different angle (vertical?). My 273 holes are ~16 deg off vertical, so maybe filing the holes would work if in the same place.
4. I must close the hood. The Magnum photos I see have a throttle body on top (too tall). Was this just trucks? Did any magnums use multi-port injection?
5. Can't interfere with other components. I have a York-type AC, but am switching to a smaller Sanden on the York bracket.

Answers to "why bother" comments:
1. I don't race. Top priority is smooth idle & good mileage.
2. It would be cool to open the hood the next time a clueless person fusses about my out-dated engine.
3. Not considering a 360 engine swap. 4.7L is fine. It works in $80K luxury cars.
4. I prefer EFI. The only time I know what is happening in a carb is when I see fuel overflowing. I want to try MegaSquirt for fuel and spark.

Please comment, throw darts, relate your experience. I will only proceed if I find a complete solution cheap, no searching for stray parts. No $1K solutions. I am deep in parts already. A '65 Dart should be cheap fun.