i had an a15 ute a year ago... it got written off!!!!! (not my fault) and i have just brought a ca18 det ute and the power is incredible compared to the a15. when it hits boost it brings a smile to my face every time.... however most of the work was done for me so i have no idea on the install.i just finished it off ..... end product is definately worth it tho.!!!! if u go ca u won't be disappointed