Depends on if you have the right tools for the job. the CatBack will take the most time. What year is your X? if its an 03 and up, there is a slip joint at the end of the crossover pipe. unlike pre 03 there is a flange. If its a rusted slip joint that will cause trouble for you. Save yourself some aggravation, and let a muffler shop install the cat back system. The intake will take approx 30 min. Good luck