Made me chuckle.

Short incomplete list: Engine arms, exhaust manifolds, fuel pump and attendant lines, depending on the year of the donor engine possibly the ECU, torque converter, transmission or at least the valve body, throttle linkage from the pedal forward, ignition switch.

How are you going to deal with the SLS?

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“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now