I'd doubt an eLocker will fit in an non-locked housing. The r/p will swap but the extra crap for the locker will be missing. You may be able to get it to work but it won't be simple unless you just write someone a check for the work.
Is it just the hubs and calipers or the spindles too?
If it is just the hubs/calipers, it is useless to us unless we get spindles since the Frontier hubs bolt pattern is different. Its either 4 on the Frontier and 3 on the Titan or the reverse.
