Nice Find!
87's are cool as they stand out in one way or another from the 86 or 88
hull and deck no change
87 model year exterior graphics - (old) bubble letters and (new) rear side swipes
Slant letters came in '88
Interior - material updated, some color added (stripes) motor box 1 piece to the floor
and updated rear seat (88 added the 2 piece clam shell motorbox)
so do you have a "special edition" maybe - none up here, could have been an end of model year update or dealer specific package
from I can see from the pics (and in no particular order):
'88 slant letters, '87 interior, optional low side pockets, pylon crossbar ears shortened, rear side swipes removed, contrast decal over gel line changed or removed, snaps..........replacement exhaust manifolds, pertronix electronic ignition, run through Ron's shaft alignment tutorial.
get acquainted with her and run it
Dan T