What EXACTLY is the difference between the black and gray transmissions on a Maxx? I have a 2.5r maxx and going to put a FOC in it and wondering if i should just save up and get a gray one from ebay. Will the FOC make my tranny stronger? And will it stop stripping gears in my tranny? Tired of ripping the tranny in and out to fix a gear cause the reverse. What all would I have to do if i was to get a gray tranny? Thanks for the help. :bow: