Ok fellas, let's add this topic to the top of the official "Beaten Dead Horses" list: 413 or 440 340 or 360 318 or 360 400HP 318 Big Block or Small Block Stroker or Stock Stroke Eddy or Cast Iron Heads Auto or 4-Speed 727 or 904 8.25" any good? Eddy or Holley Carb 741 any good? 742 vs 489 Green vs OEM Tapered bearings Turbo vs Supercharger Clutch vs. Flex Fan Rubber vs Poly vs Polygraphite Ported or Manifold Vacuum Ford 9" vs 8.75" Internal vs External Crank Balancing 440Source parts Tall vs. Short Spindles