The camel hump heads, or fuelie heads are a definite improvement over stock heads. The one downside is that there's no tapped accessory holes.
From what I've read, the Vortecs actually flow better than those heads. But for the longest time, these were considered the best "stock" small block heads you can buy.
For $5.00, they were an excellent deal, no doubt.
'79 Malibu wagon, mild 355 sbc, TH350 trans, 8.5 GN rear
Future upgrades: built 200-4R trans and 3.42 gears