318 2bbl manifold swap with OE cam - worth it?

I'm pretty sure I can get a used Holley 600 for like $40 and rebuild kits are cheap.
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What did you get the 4 bbl rod off of? That's the key to the whole thing. If I could find that part, I'd probably go with an Edelbrock for ease of setup like you said!
I grabbed a Holley 600 on ebay and threw a kit in it for a total investment of $65. As far as the rod goes, I fabricated one from 5/16" bar stock obtained at Home Depot. The bracket for the cable isn't pretty, but it works until I run across the correct piece.