Yeah, like Crazy said, make sure the connectors are the same. If they are, the only harness you should need is the one for the top of the engine (3 throttle body sensors, fuel injectors, etc.).

One other thing I just noticed in that picture... your front left tire looks a lot more worn than the others. You should make sure the ball joints and tie rods are good, and get an alignment check.

 

ball joints and tie rods good needs an alignment BAD the PO neer got one after putting those tires on it but ill get an alignment done as soon as shes running main concern lol ohh and i have what looksto bo caps where my front cv axles should be how do i remove these?? and he took the tranny to front diff axle out to so forsee a trip to pickapart junkyard in detroit the things i might find lol but i was working on it until 4 am now its 730 going back at it engines almost out

i only have a 2wd computer should i get a 4wd computer?? mon

 

also i was checking over wiring and ALL the wires match so good to go except i have inj.pumps 1&2 so need 4 more wire i need 10 additional pins put in unless i got to the junk yard and buy the harness from pcm to wire harness plug and plug to motor wire w/plug cause i cut the wire harness plug off when i removed it and cant find it but bout 30 dollars from my local junkyard soo not a big worry but will the 2wd computer run 4wd truck it doesnt look like its changed wiring at all for the 4-wheel drive?

btw 93 motor is almost in got it sitting on the cherry picker will put it in tonight hook everything up and tomorrow i go to the junkyard if need be and get her running then i got a air horn under the hood i gotta fix the wires for the spotlights up front are cut gotta fix those and put a radio in ohh and last but not least ALIGNMENT

 

I'm not sure what you mean by caps, but the cv shafts are held onto the axle half shafts by 6 bolts...

DSCN0224.jpg?t=1249237439

Like I said before, you'll need that harness for the injectors or you could make one.

The computer has no control over 4 wheel drive, so theres no need for a 4x4 computer.

 

yea that except its one solid piece and no shafts i called em caps cause i had no clue

 

Show us a pic!

 

not a bad deal for $300

 

ok so i gotta get this thing running now im planning on building skid plates a custom lift as i have access to mills and cncs and presses ohh golly gee i see huge lift and roll bars coming

 

Nice lookin Dakota, i personaly dont see to many from mines "era" (87-91) that are jacked up like that, By the way, i was wondering why did you want to replace the original 3.9, was it bad or what?, and me personaly, i would rather (and im looking to) put in an LA 318 with a matching tranny in my Dakota, because i personaly wouldnt want to deal with all the computer and electricle crap and id go with the 318 because ive been told many times i can easily get it to push out 300 HP or more and still probably get about the same gas milage even though i think my 3.9 could get more if i just replaced some sencers

 

Be sure to write up a good post about any custom parts you make!!!! I designed a lift kit for my truck, I just haven't had the time to pursue building it.