The bolt pattern for this vehicle is 5x120.7.
The air intake from the carburetor to the cylinder is in a 5 bolt pattern and larger than the other years providing more air flow.
The hubs on the 1987 models went to a 5/130 bolt pattern similar to the LT500R).
This was in contrast to the 4/130 bolt pattern of 85-86.
The bolt pattern determines the number and position of the mounting holes to allow the wheel to be bolted to the hub.
A general guide to common bolt patterns by manufacturer:
The ratios and bolt patterns remain the same regardless of the sandwich plate used.
Darts with 4-wheel drum brakes continued with the smaller bolt pattern.
That uses a round bolt pattern and has a nearly flat oil pan.
Unfortunately, the bolt patterns for the two laser systems were incompatible and she could tighten only one bolt.