conversions for 2004 lx sport

[daitalyanstali0n]

if i have a 2004 lx sport, do they have the same wiring harnesses as a mercury marauder so i can replace the two gauges in the instrument panal with a tach and place them where the holding space in front of the shifter under the radio? Also, do they have them in the door for the heated seats?
Aren't the lx sports the exact same as the marauder, and if not, does anyone know the differences other than the engine? also, what additional mods do the cvpi's have over mine, or do they have any at all other than intake. Mine has the floor shifter n the H/P package so how good of performance does it compare to a 2004 cvpi's?