[MARKDTN]

I vote updated, but not crazy. Modern fuel injection makes them so much nicer to drive. I would go small-block with one of the 3 GM options for fuel injection (TBI, TPI, Vortec) on a SB. I prefer TPI myself as the look is awesome and the low end torque is nice. Very few permanent mods to the truck are required. You can use all factory small-block mounts, exhaust, accessories, etc. I swapped a TPI into my '83 K20 and the difference is night and day.