There is a paper tag, which is glued to the top of the transmission, which will identifiy if it is one of the *very* few with a limited slip differential. I cannot remember the numbering schema, but you can look it up.
Lumbar adjustments (squeeze bulb like a blood pressure cuff) on driver and passenger side seat. (Most commonly driver side only).
Other common end-user upgrades:
Upgraded front sway bar, it will have multiple holes in the end of the sway bar with red bushings.
HID lamps, color of light and shape of bulbs give it away.
Oil pan, Aluminum versus factory stamped steel oil pan.
ECU any color but silver (typically red)
Shocks, any with external canisters or adjustable perches.
Shifter knob, not aluminum.
LED tailights on a 2005 model
Upgraded stereo with or without subwoofer, you can clearly make out the music at 65mph.
Exhaust upgrades, the car does not sound like a prius.
Headers, shaped tubing, not cast.
Intake upgrade, made of anything but plastic.
Extra carpet, (compare interior pictures)
Extra aftermarket window tint (more common in hot climates)
front spoiler (stock 2005 had no front spoiler)
rear spoiler (stock 2005 had no rear spoiler)
non-stock looking diffuser
Any rear-tow hook
Any scoops on the side of the car.
Lidbone, any trunk support which is not a simple rod.
Storm titanium 2005 Elise with carbon fiber spoiler, BWR sway bar, BOE toe links, gPan2, LidBone, sector 111 wheel studs, Grey RAC Monolite wheels with toyo R1R, Team Dynamics 1.4 with Hoosier A6/R6s, Katana2 Supercharger, ECU with 265 flash. PPE headers w/decat, CEL angle eliminator, Silent touch catback, Rear Panel Eliminator, HKS intake, V2 fuel tank, Walbro255 fuel pump. HID lights.
Last edited by addertooth; 12-16-2012 at 05:26 PM.