This just sound like a nightmare to me. You're are putting all this time into doing a swap but you are using a crap motor that is hard to find part for. The 2.3L 4d55 is the logical swap and they can be had for about $1500 in good condition.


Spence
1985 Mitsubishi PU 2.3 Turbo Diesel, 13" lift, Watercooled turbo, 4D56 Head, Atlas II,Fox Coilovers, Elockers,

1983 Mitsubishi PU 2.5 Turbo Diesel 4x4, fully restored

2003 G500, sliders, beadlocks, roofrack, ladder etc.