I know its probably been covered a million times so I am sorry for asking but could not find much info. after all the stuff added I should probably upgrade my stock gears finally. What type/size do you recommend and what brand? Where is the best place to get them I would assume this is something I would want to get new and not used? What about getting the speedo to work correctly afterwards what is recommended there? Is this a DIY job for an amature like myself or should I be looking at a shop to do it?