I would like to convert my Volvo oil drain from the current "suck it up the dipstick" to a drain hose similar to the Merc style. Unfortunately the oil dipstick is connected to the oil drain via a banjo bolt. Not sure why they did this instead of the standard dipstick hole inot the engine. Is there a kit I can purchase to retrofit - or is this pretty much a "buy the parts I need and do it myself" type of project.