I'm a stickler on an at least 9/10 on the interior. Assuming the ride you're considering is within an 6/10 interior... and based upon your description... I'd say $7K to $10K. I'm just pulling that from my... hat.
Not to hijack, and I do not know the seller... last week I saw a 97/98/99? on Las Vegas CL. Car had ~175K... for ~$7,500... but the recent work done on it was outstanding. Told my wife that if I had that "laying around" (like the 98 I bought) I'd snap it up. The laundry list of maintenance and new parts was, again, outstanding.
I've read many of your posts, Bush, and suspect you'd have a better handle on the value of the car under your consideration than I.
Looking forward tto youur apprai$al.