i own an 04 polaris predator and i would like to add a new set of hipers with 18 inch tires to get me a little closer to the ground, i will also be doing a-arms and axle (which i cannot find over +2). but my primary question is if i should change the sprocket ratio (stock is 14 front. 37 rear) because someone told me that this was needed. also, if anyone has an idea where i can get a +4 axle or any other ideas like extanded hubs