To my knowledge they are designed and built for Raceready but I could be wrong. call and ask Dave. I can't remember what the cost was... thinking about $150 including shipping but I could be wrong. Here's a couple pics.. It has a nice little screw out dipstick that lets you check the level which is nice. The base barrel unscrews to drain it so no little drain valve to piss oil out the bottom all over.Hey Rruuff, what is the make the one Race ready got you, and how much?