I would like to see 9.5-1 with the aluminum heads and that voodoo cam.
A used edelbrock performer intake is cheap enough but the 73 intake is fine.I like the thermoquad carbs so long as they are right.
Stock rockers are fine but a new replacement set would be in order.
Get a ready to run distributor from Firecore.It has a much better advance curve and easier to hook up vs. converting the 73 to electronic ignition.
Manifolds are fine but the hedman shorties with a small starter is a good upgrade.
Should be a strong runner with gobs of torque.You might even keep the 2.94's with all the torque.