The components I would worry about are the heads and block. You can swap out everything else without fear of damage. Swap out your intake/carb, exhaust, dist, pulleys, PS, AC..etc. Essentially, all you need is a rotating assembly (short block) and heads.
Find a 67-71 block and heads and you are in the game. As far as complexity with swapping out..not bad at all. 2 hours to remove, 4 hours swapping out from a to b and another 2 hours install.
Not only do I have a perfect replacement, I can rebuilt your original engine.
Tom
Si Vis Pacem Parabellum
1967 Starlight black PMD Engineering 400 Auto 1968 Alpine Blue 400 4 speed 1968 Verdoro Green 400 HO 4 speed 2013 1LE 2SS/RS Inferno Orange Camaro.
