I need this roof body trim, help me with what it is called. thx

 

The part is no longer produced or available from GM.
No aftermarket either, sorry.

I have seen just the center portion of the clearance light set go for $800+ on eBay recently.

 

Since you have one, it would be an awesome seller if you made a mold of it and had a bunch made from carbon fiber or even fiberglass. You can put me on the list to buy one.

 

Have any idea what it cost to have a mold made?

You could buy a new H3 with a set of clearance lights for less. Not to mention the H3 market is super small and slowly dying as these trucks disappear.

You'd be way ahead if you found an ebay set under $1000.

 

I will have to do some looking but on truck-u they showed a dyi kit where you can make your own mold for copying hood scoops and such. The kits where fairly cheap