3.4 is about the limit you can reach with added power v8 will need a v8 drivetrain. Simple answer is it wont be cheeper in the long run and you probably will have having an undependable vehicle that was once very dependable. lots of work for debatable gain.

(aka suprathepeg, aka Sean)
89 v6 SWB truck "BLACK BEAUTY" EB valves, P&P head 30 over.
95 FZJ80. Lifted. locked and rollin on 33s (my dream machine)