350/250 rear end driveability

I’m just wondering if anyone that has installed a 350/250 rear end onto a 300 can comment on some questions.
I’m wondering how the driveability of the machine is? Is there any issue at higger speeds or any bad vibrations? I know why guys are doing this but is it necessary for a atv that won’t be used as a mud machine/water crossing bike? I’d like to do the mod as I already picked up the rear end but I see very minimal mud and water and ride a lot of logging road and similar style trails.

Thanks