It cost around $160 all together, better than $270 plus installation with a complete system.

Now I know the Kings and Queens of XOC will start their usual knit-picking so I only did this because I have 6,000 miles on my X so I do not need to call your close friends at Calmini for a whole system.I noticed a big difference in power and the sound is just right for me. Intake is next now that the X can fart, need to let her inhale.