Right now what I have figured into this is as follows:

$925 for Tim Meyers rebuild kit w/pistons made for aussie heads, timing set, cam, and matched valvetrain components.
$400 Aussie 302 heads (bare)
$1000 engine machine work, long block assembly, and building heads
$500 intake and carb (hopefully...I have not sourced these items yet)
$250 Hedman Hedders

Total: $3,075
Add in an extra $500 for everything that I forgot (plug wires, belts, fluids, shipping costs, etc) and I'm looking at spending right around $3600 from start to finish for an engine producing in the ballpark of 450 ft/lbs of torque and 325 or so ponies.