2007 Toyota FJ Cruiser

Super sweet rig, had it about 6 years. Consistent oil and fluid changes. Currently it does start but it has a rough idle, acceleration and a gas smell. Currently no exhaust pipe but it does come with the parts to install it on. Does come with back seats as well, just were taken out for cleaning. Just had spark plugs replaced, new head gaskets, transmission fluid done and a few others. Paper work proof of work done on hand. Alternator was replaced two years ago, same with pulleys and timing belt. Reach out if you have more questions or want to see it ! Thank you. 9,000 OBO