Here are new "take off" parts from my LS7 Crate engine:
Alternator: $150
Alternator Bracket: $75
Dry Sump Pan with windage tray: $325
Internal Oil Pump: $$375
External Oil Reservoir: $100
Power Steering Pump/Pulley/Reservoir: $200
Camshaft, lifters, push rods, rocker arms, fasteners: $175...