Ford 2003 Mustang Workshop Manual page 1098

CAUTION: Do not damage the cylinder wall with the sharp edges of the connecting
rod.
Install the piston with the arrow on the piston face pointing toward the front of the engine.
16. CAUTION: Inspect the connecting rod bearing clearance. For additional information,
refer to Section 303-00
CAUTION: The connecting rod cap will fit only one way.
Position the connecting lower rod bearing and the connecting rod cap on the connecting rod
and the crankshaft journal.
17. Install the rod caps. Tighten the bolts in three stages:
Stage 1: Tighten to 25 Nm (18 lb-ft).
Stage 2: Tighten to 45 Nm (33 lb-ft).
Stage 3: Tighten an additional 105 degrees.
18. Install the remaining pistons and the connecting rods.
.