Hi, I purchased my first Landcruiser about one month ago. It's a 1992 4.0 six cylinder rated at 154 bhp. It only has 135,000 miles on it and it runs great except that the cruise-control only works when it wants to.My question is this. It feels kind of sluggish to me, is there anything I could do to it without busting the engine open to increase its performance? I already purchased a K & N air filter but cannot find anything else for it which would increase performance. Anyone out there know what I could do to add a few ponies to it that would be quick and easy? I already tried to find one of those air intake systems from two different places and they don't make them for this year and engine.