Try ATK, VERY reputable supplier of used and reman engines.. did you say 198,000 miles.. did you have the sludge problem?? just bouught a 1999 xle with 72000, sludged bad.. luckily i ( my mechanic friend) spotted it I used amsoil oil flush and scraped out the oilpan. put in marvel mystery oil and will do some 1000 mile oilchanges for a while..