The clusters between 92-99 are actually electrically very similar; the wiring for them is forward and backward compatible between 92-99 - you just have to re-pin the connectors to the correct pin-outs.
The stereo connectors are the same between all 88-99 - 95+ lack dash speakers however, having moved them to the front doors.
HVAC systems are physically the same, electrically different between 88-94/95+; but they're on a completely separate harness from the rest of the dash electronics, so all you'd need to do is swap the door motors and wiring/resistor module to use the newer HVAC controller.. Might need to repin and/or splice two or three connections for the A/C, grounds, power, etc... But it's pretty easy to figure out. Or just keep the electronic controller and retrofit it into the newer dash. The heater box itself is identical 88-99 tho.
Depending on which steering column/wheel you want to use... If you stick with the 93's column, no change needs to be made - however if you decide to go with the 99's column, you'll need to completely rewire the ignition system in the cab, swap the column support bracket that's spot-welded to the firewall, and change the transmission shifting linkage setup to the cable setup the later models use.
For the door panels, you'll need the exterior panels (with the switches and stuff) and the interior panels (that hold the window motor, lock actuator, lock and handle rods, and wiring). The interior panels are directly swappable, no modifications needed, and the windows and tracks are all the same 88-99.
I went the other direction: 97 truck, 94 interior. I ended up fully custom-rewiring the entire interior. It's one hell of a job lol. For your 93, you can get
a brand new dash core from LMC for $400 ooh their price when up to $460 now -- personally I would do that (and did) before trying to retrofit the newer interior, unless that's just what you want.