Mine wasn't for california, if you find a 86 - 88 ranger with a 2.3 in the salvage yard it's only few little bolts to remove the valve cover to determine if it has a roller or not, with some things that Ford did you never know. I've found traction-locks, detroit lockers, and nodular cases in various Ford vehicles that you wouldn't think they would put them in, so it doesn't hurt to open your mind, and eyes to take a look.