Looks great!
My splitter has been sitting in the garage for
almost 2 years.
Would like to see the 1/4 turn fastner install.

 

The way we did the race car: drill hole, rivet the female part on both sides (epoxy fills if you f'k up) . test fit male part just on the female part, see how much height you have left (how much it moves) check thickness of fiberglass. Insert male end with epoxy on it, on the back side, let it set up. Provided all your holes match up.