Replacing the A/C Compressor

[fixkick]

one way to see the all differences
is to put the parts lists side by side
all parts, xxxxx-77Exx are sport only parts. and the list is HUGE
77 code is this
and can be found on cars newer, with J20 engines on up.
the engine and controls , EFI and all that and wiring are all unique,
so is the transmission controls.
and suspensions. and more,