Do what you can to reduce weight, go with 1/4 tank of gas, remove the back seat cushion (it doesn't even take tools). Remove your spare tire, remove you woofer if possible.
You could probably ditch 200lbs out of the FX real quick. With a car as heavy as this 200lbs is like adding ~20hp. Not too mention the extra jump you get off the line from the weight loss.
I don't know about 200lbs.. More like 80~100lbs if you include the rear bottom cushion. If you have to remove the rear seat backs just for a .1sec improvement, "you're doing it wrong" as they say. These are heavy vehicles, almost similar weight to the Challenger Hellcat with 707hp, and even the Hellcat is low 11s @ 12x ish. Takes a lot of power to move a brick.
[TABLE="width: 847"]
[TR]
[TD]
STOCK Weights[/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]
FX50[/TD]
[TD="align: right"]
4557[/TD]
[TD]??[/TD]
[/TR]
[TR]
[TD]STOCK FX50 21" wheel 21x9.5 50mm[/TD]
[TD="align: right"]71.8[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]STOCK FX50 21" rim[/TD]
[TD="align: right"]35[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]STOCK FX50 21" tire 265/45R21[/TD]
[TD="align: right"]37[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stock Exhaust[/TD]
[TD="align: right"]63[/TD]
[TD]??[/TD]
[/TR]
[TR]
[TD]Cats[/TD]
[TD="align: right"]10[/TD]
[TD]??[/TD]
[/TR]
[TR]
[TD]Spare Tire[/TD]
[TD="align: right"]37[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Tools/Jack[/TD]
[TD="align: right"]8.8[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Tow Hook[/TD]
[TD="align: right"]1.2[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Bass Speaker[/TD]
[TD="align: right"]8.4[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Rear Deck Platform[/TD]
[TD="align: right"]13.2[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Rear Mat[/TD]
[TD="align: right"]3.6[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Rear Grocery[/TD]
[TD="align: right"]8[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Roof Cross Bars[/TD]
[TD="align: right"]6.4[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stock front ROTORS[/TD]
[TD="align: right"]28.8[/TD]
[TD]??[/TD]
[/TR]
[TR]
[TD]Stock Battery 700CCA 999m1-qc24f[/TD]
[TD="align: right"]41[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stock Lug nuts (per 5)[/TD]
[TD="align: right"]0.8[/TD]
[TD][/TD]
[/TR]
[/TABLE]