Any body heard of a workhorse performance box,I . think they are made by Dr Performance.Iread somewhere that they have gone out of business. I have one of there boxes.Ihad it on before I replaced my vp44 and it seemed to give me a little better MPG .My truck is a02 dodge auto stock except for a95 gph fas and big line kit and gauges,fuel press,boost andexh.temp.