Reviewed By Mack W (SOUTH HILL, VA) Reviewed for a 1998 Ford F-150 —9/1/2013 9:38 AM
Works great I would recommend that you do not go with 100 percent firmness upgrade on the 1st to 2nd shift it is too hard.
Reviewed By Randy W (Glendale, AZ) Reviewed for a 1998 Ford F-150 —6/16/2010 4:26 PM
This product was very easy to install on my Ford F150 truck. Afterwards I took it out on a test drive and was amazed how much more horse power my truck had. Great product and I would recommend it to my friends.