If I buy a +2 swingarm will I need a longer chain? and if I do how many links will I need? I currently have the stock gearing and I am thinking about going to a 42 or 43 tooth in the rear. I need more power for climbing the dunes as I weigh 280#'s. Also, will a +2 keep the front down enough? I was thinking that with my tonnage and the engine that I am going to build I might need a +6. This would help to make the quad more stable, give it more travel, and keep the front down on steep climbs. What so please respond with all thoughts on the subject.