Re: wheel upgrade
You can pretty much forget anything off a foreign car of any type, the metric sizing will no doubt be an issue if trying to use your spindles.
I'd be looking at at older american rear wheel drive and early front wheel drive rear hubs. K car rear hubs from the mid to late 80's are a good possibility. The Dodge dart/plymouth duster hubs might be another good option. Old Mustang front hubs and any number of Ford spring over control arm cars from the early 70's might also work. (Maveric, Torino, Falcon, Comet, etc.) Look for drum brakes, their easier to remove the hub from the drum in order to loose the weight. The K car drums are held on by the studs, but if you knock the studs back a bit, the drum falls away and the studs can be pressed back and all is fine.
I have a set of those on my utility trailer, I took a set of 1986 Dodge Aries K rear hubs, tossed the drums, and was took the old bearings to the local bearing supplier, and explained what I needed to achieve, $35 worth of new bearings later and they fit just fine. I never checked but I'd venture to guess the bearings were just plain trailer sizes anyhow. The seals we came up with were special though, the OD was larger than most trailer seals.
The lug pattern was the same as a trailer wheel, 5 x 4.5".
It may be cheaper in the long run to just buy a pair of hubs complete new? I bought a brand new pair of 5 lug 1500lb class 1" bearing hubs at the local marina for $54 complete with bearings and seals. Chances are if you search online, they could be had for half of that.
It all depends on what your time is worth and what your local junk yard is charging. They get $50 here for a pair of used hubs or better. The common practice here is to charge exactly half of new for used auto parts. So the junk yard is rarely the way to go, let alone the time it takes.
