well so far on tr i think there r only 2 guys that have put nitrous in their 420a. CHILL and I. Ask anyone, the motor like nitrous better than boost. i have forged internals and run 75 shot with no problems. im not the fastest for sure and wish it was faster but im not complaining either cuz i know i i wont be the fastest. the fastest 420a non turbo so far is 201 HP to the wheels and the guy is a real nice guy. its not really a daily driver either lol.