Hi buddy the engine pic on the 24 there's a pipe missing on the pic (the hole next to maf) maybe that's part of the running problem?
There cracking cars and that looks fairly straight but that's high end money for a 98 car I wouldn't get much more for mine and mines a much higher spec with good history and less miles.
Not trying to be funny so please don't be offended just trying to advise you prices have plummeted cos people seem to think there expensive to run for some reason however I'm not one of them Glwts