1979 360 2bbl truck motor

I like the valve cover idea, but even a core is over $200 every where I look, and I am seeing 71/72 Dodge Demon cars pop up everywhere lately (always looking). Any accessories? Any time anyone sells a pulley (40+), engine mounts ($20-$40), A/C mount setup (as much as $350), used stock rockers and shafts (minimum $50) -a complete engine should go for $350(InMyHumbleOpinion). But I believe engines are cheaper and more prevalent up north, and vehicles are more prevalent in the south (rust and snow influences).
One thing I look at, is I can buy 5.9 magnums all day long between 300-500 bucks, running engines, miles vary and price reflects. That's why I see the prices I see on a "core LA 360 2bbl".