I did my install and it wasnt bad. The instructions could've included every single step,..but I got thru it ok...
You dont need to cut anything as mentioned above except the oem water tank piece,..and you will not need to replug the small connector on the bottom of the oem fluid resevoir as this is not mentioned..
As for my own mods,..I took out this plastic divider so fresh air can hit the air filters and took out the "fang" covers in the front bumper...