Correct, from the order guide 303a Stealth Package is basically just styling changes. 304a is the Stealth Performance package which is different engine, Sports tuned suspension, red calipers, different final drive ratio, 22-speaker sound system.
This is from the Order guide. Can also find the guide with a search on here. The engine change is in a different section. Limited and Stealth have same motor. Timberline and Stealth Performance have same motor.
Stealth Performance Edition Package
• 2” Premium Black-Painted Aluminum Wheels
• P285/45R22 All-Season (A/S) BSW Tires
• Sport-Tuned Suspension
• Dual Exhaust System
• 3.73 Non-Limited-Slip Rear Axle
• Grille – Twin Spar, Ebony Black
• Mirrors, Sideview – Power-Folding with Autofold, Power and Heated
Glass, Turn Signal Indicators, Security Approach Lamps,
Driver/Passenger Side Memory, Driver’s Side Auto-Dimming with Black-
Painted Caps
• Rear Bumper – Black
• Red Brake Calipers
• Roof-Rack Side-Rails – Black
• Running Boards, Power Deployable – Ebony Black
• Door Handles – Body Color
• Exterior Badges – EXPEDITION Lettering on Hood, Limited Tailgate
Badge (Black)
– Tailgate Appliqué – Ebony Black
• Black Headlamp and Fog Lamp Bezels
– LED Taillamp with Black Bezels
• B&O® Unleashed Sound System by Bang & Olufsen®, 22 Speakers
including Subwoofer
• Center Console – Sport
• Enhanced Active Noise Control and Engine Sound Enhancement
• Floor Mats with Logo – Front and Second Rows
• Unique Interior Stitching – Red
• Ford Co-Pilot360™ Assist 2.03
– Reverse Brake Assist
– 360-Camera with Split View and Front/Rear Washer
– Active Park Assist 2.0