At little bit different, but definitely a sleeper (as long as he upgrades the diff )
I'm thinking from past ownership, but the Mitsi diff (not BW) from the GK onwards and Scorpions would be a direct fit and have disc rear at the same time !!!
Even a Mitsi Scorpion with a 1UZ would be great. Heaps of room in the nose for a monster IC as well !!!