First, confirm that the 1987 and 1995 interiors are interchangeable. I expect that the door panels, rear deck, carpet and seats would be straightforward, but the dash, center console, headliner and pillar trim will present a challenge. $600 sounds like a steal for the entire 1995 interior. Check what a bodyshop would charge for swapping the interiors for you versus doing the difficult items only ... the dash, center console, headliner and pillar trim which require more experience and skill.

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Fred Hoelzle