I've done quite a bit of searching, and from what I gather a t-case out of an 84 FJ60 could be run in a 40 but would require driveshaft and parking brake mods. I couldn't find any info about the gears themselves, specifically the hispeed output gear and the transfer sleeve are the two parts I'm in need of. Are the gears between the two compatible, or do I need to keep looking for some 40 gears? Thanks, Jason