I am installing an MC28 engine in my 21 and have found that the MC28 does not have the carb boost bottles that the MC21 has.

A bit of research on the site tells me on the 28 these are part of the airbox. Given I won't be running this airbox, am I safe to assume I need to fit the MC21 boost bottles?

Bike is race only, but I'd rather have them if they make setup easier...