Here are some photos of the original Kevlar hopper tank shield. It's .the round one in the photos.
On a virgin kit tank shield, add a round hole for a BVM Tank stopper in one end, and install a BVM vent fitting as appear on the Super Bandit hopper tank as shown in the photos.
Aeropoxy the two halves together, and you have a 24 ounce hopper tank to replace the 16 ounce Sullivan tank.
On the round one shown in the photos, you can see the large diameter hole in the end, which must be covered by a disk of G-10 , and then penetrated for the BVM tank stopper.
As an alternative, BVM sells the large Super Bandit Kevlar hopper tank for $155.00, part number is K5300-55. It fits between the inlets. You will then have 3.6 liters of fuel.
It is shown installed in my Super Bandit.
Looks like I duplicated one of the photos....rats!