Welcome!!!
Let's start with the Advice.
Use the search function alot on this board,it will save both yourself and the members alot of time.
I searched and read for at least 2 years before I ever actually joined.
Here is a link to a thread concerning what to look for in a LUV
http://forums.luvtruck.com/viewtopic.php?t=15126
I don't know how well the 4x4's do in the snow,but with some decent weight and alot of skill my 2wd gets around pretty darned allright.
Parts availability???
Dude,I'll let ya know right now that where we are at it's LUV Heaven!!
You won't find a bunch sitting in wrecking yards,just backyards,and if you keep your eyes open for em they are everywhere.
I know of at least 4 that are sitting right now,one is a 4x4.
I just have too many projects in my yard right now to even consider asking about them.
Heck,I've got a 78 longbox sitting in my backyard in the process of being parted out.
Hope this helps,and Good Luck!!!!