i have an LT1 for sale it has every thing you would need for the change. it comes with:
wiring harness (including the aldl connector)
alternator
a\c compressor
aluminum heads
power steering pump
pcm (computer)
radiator and hoses
all engine sensors
exhaust manifolds (with o2 sensor with the y pipe)
water pump
transmission (4l60e)
usb\ aldl cable for a laptop with software to fully tune the engine your self and change the gov.
the engine is fully assembled, comes complete from the fuel injectors all the way to the oil pan.
the engine came out of a 94’ trans-am gt