Interior swap issues.

Yeah the rear pillars would be the one spot I would check closely. Everything else should be the same. But like you said you need to look close around the shock towers and all.

It will all fit. I have a 90 interior in my 87. But you will have to do some mods. The plastic quarter panels will need new holes drilled for the seat belt bolts on the B pillar, they are higher on the 90-93 cars. If you get the seatbelts, they have a different mounting tab so you will have to mod the belt tab or the inside of your car. The rears have shoulder belts, thus the differences in the quarter panels by the seats. They have a welded on seat belt mount under the plastic that your 87 does not have. You can weld the mounts to your car, or make the belts work by bolting them to the wheel well like I did.

If you get the dash, it has the fuse panel under the dash, not on the dash like in 87. Also get the AC controls if you want them to bolt right in. They changed the mounting holes, and then you will ahve to lengthen the yellow vacuum line to hook the new one up. If you have the remote fuel door, you will need to make a hole for it. You will have to extend a wire for your dome light reading lamp part, and the 93 dome light mounts differently than the 87. They have a different bracket under the roof. The rear seat bottoms mount differently so get the big "U" shaped seat brackets.

There are probably a few more things I'm forgetting, but you can make everything work if you want to. And $500 for a black leather interior is a good price!

One thing, on the LX hatch, you will have to weld up several holes and drill a few new ones to mount a GT spoiler. But if the price is right, a bit of work is not too bad.