It's a fact. Dollar per Horsepower, you can't beat Nitrous Oxide for making horsepower. Where alse can you add 100 horsepower to your Mustang for under $1K? We've seen a lot of nitrous kits over the years, and this is the best one we've tried yet. Testing has seen 110mph in through the traps on a 2002 4.6L 2-valve. The Basic Nitrous Kit includes the nitrous bottle, mounting brackets, solenoids, arming switch, full throttle activation switch, wires and jets to adjust nitrous output for 25, 50, 75, 100 and 150 horsepower