SIXSTICK94 - I looked on the MONROE.COM site and they had a "GAS-MAGNUM" shock used for mid to full size "hard working" trucks and also a "MONRO-MATIC PLUS" which is a nitogen-gas charged shock. They did not have a "GASMATIC" shock. I believe they discontinued that shock or redesigned it a little and now call it something else. Do you know what it is called now? I just use my 94 150 for in town driving and do now want to stiff of a ride. I still have the original ford shocks which are now leaking. I think these leaking shocks cause the front end to shimy when I stop a little hard on a rough road. I have new brakes/rotors on the front so I am guessing it is the shocks as everything else checks out ok.