I'm in the midst of this exact project right now
Hope you're good with wiring, drilling out spot-welds, and have a lot of time.
You'll need:
The dash body: LMC sells them for $400+ shipping. You'll have to get most of the dash components from salvage yards.
The steering column AND intermediate shaft. You will need to drill the four holes for the column lower mounting into your truck's firewall. The good news is, the firewall itself doesn't need to be bent into shape, but you will need to cut a slot for the auto shifter linkage if you have an auto. The steering gearbox does NOT need to be altered.
The steering column SUPPORT. This is what the upper part of the column AND the dash attaches to. The 95+ column supports do not work, ask me how I know lol. This is where drilling out spot welds comes into play: there are four at the top of this bracket under the windshield, two above the brake pedal, and two between the upper and lower brake booster bolts.
Pic of my swapped-in column support for reference:
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I recommend you pull one from a 94 truck, as the brake pedal mounting is the same on them as the 95+. 88-93 I cannot guarantee are the same, as the brake switches are definitely different in those.
You'll also need the A-pillar trim for both sides, unless you modify your existing ones to fit the old dash.
Your existing door panels will work (as in, they won't mess up the dash) until you can find old ones, but fair warning you'll be looking a while for those. And unless you modify the door pin switches for the dome lights, I'd recommend leaving them unplugged because the older dash switches don't contact the newer door panels.
The rest is mainly wiring.
Pull a complete HVAC system harness from a late 93 to 94 truck. These should be 4-speed units - 88- early 93 were all 3-speed. Unless you're really going for that all-88 look in which case you'll have the blacked-out controller that only ran 3 speeds, and you'll need a wiring harness from an 88-90 to match that. Note on these, NO RECIRCULATION DOOR CONTROL until the 92+ controller. So you'll want to figure something out for that. You will need the mode door actuators too, the newer ones are NOT compatible with the old controls.
Oh and Idk how you'll go about wiring up the VSS for the old 88 Moonie cluster, as those have the VSS buffer built-in... Meaning the sensor on the transmission ran directly to the cluster. And if you have an automatic trans, that adds another set of linkages and such you'll have to swap in so the column shifter will work as designed.
It's a mess, lol. But it's doable
Also uh... If you have a 98-99, you're going to need to bypass the PassKey system, and the EVO steering from 97-99... And I really hope you don't have the electric-shift 4x4, because there really is no old version option for that.
