Hi-Tech Performance (HTP) Top Loader is made from HF-1173-D 4130 annealed steel and is one of the strongest in the market.  The HTP top loader can be used with the Meirsch, MPD, Dominator, Berkeley, and American Turbine intakes.
 
Comes complete with fastener kit.
 
Caution:  The Top loader is the single hardest working part on a jet boat.  If and when a loader fails, damage to the boat and human injury is common.  Inspect your loader often.  Replace if you dont know the age or history.  Forming rust and poor welds are a bad sign.