You don't want a spool in the front, lockers in the front are hard
enough to deal with offroad a spool would make it absolutely no
fun to drive.
I have a Trail Tough Locker and a twin stick and I unlock the front
unless I need to traction all the time, if you had manual hubs and a
spool you will hate it, plus you can't always get out and unlock the
hubs when you are wheeling which could put you into a dangerous
situation where you don't want front drive and can't get out.
Just pony up for the locker and get a twin stick, it's well worth it
Wild