I found out where I can get one - and even unengineered, Coriolis says that the 3D is both lighter and has a higher jump range than my engineered non-SCO FSD. If that confirms, then that's a no brainer. But I'll need to actually do one or two trial runs this time, just to find out whether I'll also have to upgrade to the stock fuel tank. And schedule in a trip to Eurybia to visit bomb girl.