hey anyone know a good site to order at complete aftermarket exhaust syem including headers for a 1991 marquis with a 5.0L
www.mercurymarauder.com has any performance stuff ya may want. I wouldn't waste my $ on headers, as your only gonna get 5 -8 H.P gain. A good dual exaust with 3" pipes and after market mufflers are your best bet. If you must have headers, be sure to get powder coated ones; again at the Marauder site. I have a 03 Marauder and a 05 Gran Marq. By chaing your chip you can gain the most bang for your buck. SLR makes a goof proof one thats siple to install and self adjusts to get as much as 50 H.P gain. I also changed my rear gears, to Ford Racing 4:10's, another way to realy get you 5.0 to stand up. You will be buying new rear tires more often, but it worth it. Change up to 18", as they not only look good but work. Have fun..........
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