how hard of a job is this? is it unreasonable to think that i could do it myself? how thorough is the FSM at explaining the process?i am no mechanic, but i put the intake header and exhaust on my car without a problem, and my friends dad is good with cars. i have my mom's car to drive for a week, and im sure i could get it knocked out in that time, has anyone done one that is not an excellent mechanic? i am a poor high school student, so i would like to save all the money i can, but should i just go ahead and cough up the $200ish to have a professional do it?