Hey there I am new here. I am looking at a 88 range rover, the owner says is runs fine up to 2000 rpm then drop off and won't go higher. He has changed the muffler and cat, tuned it up, checked the fuel pressure. he did not mention any check engine lights. I can get if fairly cheap, but am wondering how big of an issue this could be? any ideas will help me decide if I go ahead with the deal. Thanks, Loren