well i wanted to put that .18 by OS in my evader...but im low on cash. can changing to a smaller spur gear do the job?....also if so, can i use the evader bx spur? (56t vs. 60t) cause they are both 32pitch...but i dont know. also....if i change from the stock clutchbell to maybe a 17t....would i have to get my transmission aluminum-ized to deal with the better speed?