I have a 1996 blaster that I am planning to extend +4 and put a 400ex rear shock on. The 400ex I found is from a 2012. Will this make a difference in the mods that will need to be done? I always see everyone talk about these shocks and the slight mods that need to occur but I have not heard anything about the year model of the shock. I don'the want to buy the wrong shock. Thanks for any help you can give.