My 78 has the shoulder belts, and my blazer has lap belts, but it's a full top.
A friend of mine had a 76 with lap belts, I think Bob has the best idea, and it's worth the time to fight the ticket... Good luck.
__________________
Aric
75 2WD BLAZER (never ending project)
-some day maybe-
02 2500HD CREW CAB 4X (daily drive)
-8" lift 37s and 22s-
____  ____________________________
|