See Grim's post here. I don't keep my spare parts with me all the time. They get put in the truck for wheeling and only then. Otherwise, I'd probably find a permanent spot to mount them. I have a rear driveshaft, two assembled 10 bolt front axle shafts, and one 10 bolt rear axle shaft that I've just been tossing inside my truck box (the cargo things Delta and others make). Hopefully, soon, I can find myself a spare NP208/700R4 front driveshaft and I'll have that to store also. I'm trying to give everything a home instead of sticking it in the truck box like I've been doing for over a year. I'm working on mounts for the Hi-Lifts, my ax and hatchet, my shovel, and I've already moved all my onboard air stuff including my hose under truck. I don't like crap loose in the bed even though by the end of the day usually at least the ax and shovel are lying in the bed(!). My current plans are to stick them in 4" drainfield PVC pipe. Of course, the rear axle shaft won't fit. Anyway, I plan on making wooden supports to suspend the the front axle shafts in the pipe so they can't slop around inside the pipe. The shafts will be painted and the splines will be treated with Maxima Chain Wax and then wrapped with electrical tape. My rear driveshaft fits tight in 4" drainfield PVC. Has anyone had durability problems with this stuff? I know it's not impact-friendly but a 200lb person can stand on them and they don't crush. I don't want to use schedule 80 sewer PVC because it costs a lot and I don't know where I'd find it here in BFE anyway. Next, has anyone found well casing big enough to fit a 10 bolt or 12 bolt rear axle shaft inside? Thanks for the help guys. I know someone has to have found a solution to this problem by now.