LS
MIGHT AS WELL GO WITH A 200 SHOT IF YOUR GOING TO MESS WITH "NOS" THE 5.3 WILL NEED SOME GOOD FLOWING HEADERS TO BE BENIFICIAL. ALSO IF YOUR STALL CONVERTER IS NOT SETUP FOR NOS IT COULD POSSIBLY REDLINE WHEN YOU HIT THE BUTTON, OR TO LOOSE.. YOU NEED A TIGHTER OR LOWER STALL SPEED TO KEEP THE RPMS DOWN.. STOP IN SOMETIME, R.C.