R Roxx Yer New member Jan 28, 2011 #1 Just bought a very nice Mercury Grand Marquis from 1987 with 69k actual. What are some ways I can boost the performance? Nothing crazy....even 40 to 60 more horsepower would be great. Thanks
Just bought a very nice Mercury Grand Marquis from 1987 with 69k actual. What are some ways I can boost the performance? Nothing crazy....even 40 to 60 more horsepower would be great. Thanks