Ok, other than trim where does your 200 pounds come from?

According to Marty, 40 pounds for the front and rear bumpers and supports. Other than that, I'm clueless. That'* kinda the point of all this.

I'm telling what it ISN'T while we try to narrow down what it IS.

160 more pounds to go.

How do you know you have a 200 pound difference?

when I was adjusting my front quarter panel, it has a sound deadening mat in it. (like the one under the trunk carpet) I can guess all the panels have this heavy mat too. I also have then under the cabin carpet. Don't know if they are thicker than an SE.

Multiple times weighing at the same scale 1/2 mile from my house over the last few months. I think the SLE is actually closer to 300 lighter though.

Sand in the frame / Rocker panels...you would be surprised how much sand acctually gets into places like that

the bumpers/trim all being bigger i think would atribute to maybe 10-15lbs and then the 40lb differance of the bumber impact bar. the fog light mounts are alot bigger on the Ei
those extra exaust tips on the front of your car and the ducts that go along with them.

possible a thicker under carpet? denser foam in the seats, Compass modual plus the wiring that goes with it (not sure if the SLE'* had those) upgraded speakers, factory amp, more wiring

Any signs the car may have been painted more then just the original paint?... Add 2-3 lbs per panel if there is more paint on it (with each time it was painted)

I flush my rockers twice a year. No sand at all.

Foglights from the FACTORY are exactly the same size, it'* an illusion that makes you think otherwise, besides, both of mine are the exact same aftermarket light anyway.

Ducts weigh less that 1 pound. Exhaust tips weigh 1 pound or less.

So what we have left is front and rear bumper, side cladding REAR speakers and the amp for them, and the compass module?

I don't think we're even halfway there, honestly.

How about the windshield? One made for HUD and one without?

No i know theres a long way to go to make up the differance, BUT I said the fog light MOUNTS (brackets)

what about any of the other things i mentioned?

Maybe something with the various modifications you have done to both cars?