I take it you are using the Big Bear wheels as well? It will all bolt right up to the 300. However, the 300 has different differential ratios in the front than it has in the rear and requires a shorter tire up front by 1". But most tires do ok if you run a couple pounds less in the front than the rear to make the ACTUAL diameters a difference of one inch.
If you don't pound the trails hard or ride often on hard packed surfaces, the difference in the ratios aren't going to make a dramatic impact on the ride, traction, or durability of the driveline. But if you do either,..it will.