Hi, I am thinking of purchasing this Porsche 911 Carrera 4 1991, 78,000 miles. http://www.cars.com/go/search/detail.jsp;jsessionid=CFTB0ZIOOWVS1LAYIEUU2VA?tab=summary&paId=221921752&recnum=1&actLog=true&tracktype=usedcc&pageNumber=0&numResultsPerPage=50&largeNumResultsPerPage=0&sortorder=descending&sortfield=PRICE+descending&certifiedOnly=false&criteria=K-%7CE-%7CM-_41_%7CB-25000%7CA-15000%7CH-%7CD-_386-1-1_%7CN-N%7CR-75%7CI-1%7CP-PRICE+descending%7CQ-descending%7CY-_1990-1991-1992-1993-1994-1995-1996-1997-1998-1999-2000-2001-2002-2003-2004-2005-2006-2007_%7CX-popular%7CZ-80206&aff=national Any advice on what I should look out for? Thanks Gene
