What exactly does each of these include (89 200)?

[BQUICK]

1 6g5-w0090-15-ek
Crank-cyl.assy. (ref. #2~56 & G
[6g5-w0090-16-ek]
Ur175/200model
$6,862.00 $5,974.80 1

2 6g5-15100-04-94
Crankcase Assy
Ur175/200model
$4,543.05 $3,957.01 1

2 6g4-15100-04-94
Crankcase Assy
[6g4-15100-04-1s]
$3,391.48 $2,953.98 1

I'm looking for a shortblock without heads.

[boats.net]

The Crank-Cylinder Assemble(powerhead assy) is the block and heads and all internal parts including crank, rods and pistons.
The Crankcase assy is just the block, no heads or internal parts.