You're wrong... it is:
Wheels
Tires
Brakes
Suspension
Aluminum alloy pedals
Carbon fiber spoiler
Dual Motor badge with red underline (good for at least 10+ hp)
A stealth is a dual motor with a "flash tune". I do not THINK it includes "track mode" or the raised speed limiter.
My Stealth had Track Mode, and the Release notes for that said it had the same Top Speed as a plus.
It had the red underline badge.
Rumor has it the current round of Inventory Stealths won't have or won't keep Track Mode. But you never know.