change all of the fluids and check anything rubber, like vacuum lines, radiator hoses, etc... for dry rot. Make sure you have fresh gas. I'm sure other people will chime in because I know there are other things i can't think of right now.
Drop the tank and have it cleaned at a local radiator shop. Then replace the pump and fuel filter. Change ALL fluids and have the radiator checked. You may have to replace the injectors but wait until you get the rest done. Use the longer oil filter (pf52) or eqivelent and fill it with oil but disconect the cam sensor to prime the pump.