well copy and paste is the one thing i can help out with on this site since i dont know jack about rc yet. heres the hop up list for the backdraft. http://www.redcatracing.com/s.nl and if that doesnt work go the parts section at the top, find ur car, i just click the picture, scroll down and ull see a list of lists to look at from engines, parts, hop ups, tools, like 6 lists you can look at and one is hop ups so just check that and hit search and itll show the list of all hop ups for the vehicle(s) u checked earlier. real easy once u find it lol