Wagon dash/interior swap (88/89 and 90/91 differences)[USDM]

Ok, so we should all know the cosmetic differences between the 88/89 and the 90/91 dashes.
My question is- what are the differences when swaping the dash?
Is the dash from a 90/91 going to bolt into my 88?
Again, I'm aware of the differences with switches and guages. So I'm prepared to grab these parts to make it work (if they're different). But I'm wondering if there are any HVAC clearances underneath I'm not thinking of, or different bolting allignments, or what?
We got a 90/91 with CLEAN and FULL Grey interor at my yard. I'm thinking about buying it, but don't want to hate myself later if it's not gonna work over a detail I overlooked. I did a bunch of searching, but nothing this specific (usually CRX or Teg swaps).
This is a question to start. Hopefully it will be a write-up on an interior swap soon
My question is- what are the differences when swaping the dash?
Is the dash from a 90/91 going to bolt into my 88?
Again, I'm aware of the differences with switches and guages. So I'm prepared to grab these parts to make it work (if they're different). But I'm wondering if there are any HVAC clearances underneath I'm not thinking of, or different bolting allignments, or what?
We got a 90/91 with CLEAN and FULL Grey interor at my yard. I'm thinking about buying it, but don't want to hate myself later if it's not gonna work over a detail I overlooked. I did a bunch of searching, but nothing this specific (usually CRX or Teg swaps).
This is a question to start. Hopefully it will be a write-up on an interior swap soon

Comments
1) The 'A' and 'B' pillar trims will be different due to the automatic belts.
2) The front seats won't be a direct fit- the floorpans are different, as are the seat mounts.
I don't see why the dash wouldn't fit, heck, all of this can be overcome. I've seen some unexpected quirks, though... especially when dealing with an '88.
The passenger seat is perfect. I'm gonna grab it and reskin mine. Then just wait for another skin to pop up. I've got a blue seat in there now already for driver. It will match better with the grey than with the current brown.
That's the kind of info I'm lookin for!
That's kinda what I was refering to in the first post.
I'm gonna snip the pigtails off the junk car, just in case.
Still trying to pull the funding. Based on their online price list, should be around $160(I think)
Changing the whole dash, switch locations shouldn't matter. Like charb said, just get the pigtails...or the whole dash harness just in case!
This would be the way to go as the harness is already ran through and attached to the new dash. Just unplug the harness from the fuse block and pull the dash. It should plug right into the 88/89, right?
Do all of the switches work on your dash? I plan to do the same but with a CRX dash.
This might sound weird, sorry for thread jack. I have an 89 civic wagon and my hazard switch is in the dash not the steering column. Could this be because of the time of year it was made? Thanks and once again, sorry for the thread jack.
(sorry i can't help with info, although i know the glove boxes swap)