I purchased the CARB compliant Scepter gas cans due to the fact that more gas can be stored per square area of floor. The civilian cans have individual spouts (unlike the military counterpart) even though the civilian cans are less sturdy.

However (AND HERE IS THE IMPORTANT PART!!!), the NON-CARB compliant Scepter spouts that are still sold in Canada fits the CARB compliant Scepter cans well!!!

http://www.homedepot.ca/product/gas-can-spout/907423

The cap is the same. The only difference between the cap of the CARB compliant cap and the non-COMPLIANT cap has a cover of a different configuration to account for differences in the geometry of the CARB spout and it is of a different color!! The non-CARB spout will work with EITHER cover; the CARB spout is restricted to the cover that came with the can.

http://www.homedepot.ca/product/gas-can-accessory-3-parts/907422

Obviously, the vent cap on the accessory is worthless in the CARB-compliant can.

When a CARB can is purchased, all that needs to be replaced is the spout itself and you are good to go.

Conway Yee