Everyone says how much better long tube headers are than the short tubes but I can not find any long tube headers for my 2002 ford f150 4.6l. 2004-2008 I can but not a 02. 5.4l long tubes are available for a 2002 but not the 4.6l. Can the 5.4l long tubes be used for the 4.6l or should I just go with the shorties? Thanks!