What kind of riding do you do? if your ridding stuff were your no realy sidehillin or boondocking its better to have it wide. but if your carving and sidehilling narow is the way to go.
the hcr should already be in wide stance mode for hill climbs, you will have to experiment a bit to see what fits you best and your riding style and area.
i have an hcr as well i came off an 08 m8 and i deffinitaly noticed the 2 inches wider stance. I have simmions which helped alot and i just moved my bushings to the inside. works great on the trail, climbing and playin in the twigs.
on my MXZ800 i think i have wides stance you can get at 48" very good on the trails and creek beds leave every body behind in the corners totally sucks on any side hill even worst now that i went to a 1.75 track a few more tweaks we will go sidehilling trying to come up with a happy medium between
flat land and mountains