Hmm...do you have camber kits? Are your fenders rolled? I think Keith's 17x9 +35 F/R setup is one of the more aggressive setups for sedans, and he went through quite a bit of work to fit them. Nothing's impossible though, it just depends how far you're willing to go on running stretched tires, rolling fronts/rears, running negative camber, not having any backseat passengers, etc...