Evol makes a very nice body kit for the altima. It adds that little extra that the altima that year missed on the rear section. Kinda making it look like a mini version of the GS400. Engine wise, well your bank acct sets the limit there. The 2+ liter engine accepts a wide variety of bolt on HP upgrades aswell as the not so simple things like N.O.S systems, cams, etc. Borla makes a very tricked exhaust out of aircraft grade aluminum which adds quite a few ponies, cold air systems by Ice Man, ignition system by Jacobs, MSD, etc. Preoilers which saves you about 75% of engine wear each morning by preoiling the motor, turbo, etc. Then there's the surplus of carbon fiber body parts. Yes indeed, research its going to be your helper. you can try cardomain.com they list upgrades on the rides.GL