718LS430

I currently have a 2008 GX470 with 100k miles i wanted to upgrade the front and rear Suspension to get it feeling less like a Marsh mellow when taking on Turns just want a tighter feel. I would like to keep the ride hit as is or a little lower not a big fan of the car being lifted. living in NYC its not really necessary. Any one have any suggestions or links to past threads of the same topics?