not sure as far as dynojet jet sizes as they are different,but yes it will be easier to take the carbs off to change out the needles.you can do it with them halfway on but i always seem to drop crap then its like finding a needle in a haystack

__________________
SUNBEAM RED LE TERYX
msa nukes,28" bugs,audiopipe,belt snorkels,dyna cdi,billet shift knob,extreme lift,HW carb kit,rear bumper,k&n filter kit,Night owl hids,overdrive plate,grant wheel