There is no minimum height requirement in Hawaii. From the State Inspection Manual-
Bumpers- The State sets a 22-inch maximum height for cars. There is no minimum height for cars.
Also covered in HRS 291-35.1
I don't see anything about suspension rebound.
And OP, only Oahu requires recons.
http://hidot.hawaii.gov/highways/fil...cks-9-2013.pdf