Originally Posted by 1/4milecrazy

I converted my B4.2 to a Centro mid motor and absolutely love it. I am probably gonna do a D4 13.5 short stack with a Hobbywing justock ESC. Savox or spektrum servo and a brick pack for weight. I feel it will be a good combo for our track. Might do a 3 gear trans and aluminum top shaft as well. Not really sure what other mods I will be doing as of yet.