People have run the Edelbrock's with manifolds.... It's tight, expect to burn some plug wires..... Or invest in ACCEL Extreme 9000 Ceramic Spark Plug Wires, the boots can lay against the manifold & not be effected...
Next option 440 Source Stealth heads, straight plugs...
Another option is the Mopar 452 Aluminum heads which are actually Edelbrock heads with straight plugs...