Recently I sold my 99 Gt to a friend along with my nitrous kit. I have been running a 95-100 shot on this car for the longest and hitting the mid-12's with no problems. Talked with him the other day and he is changing the jets to between a 150 to 175 jet! Is this safe? The car has all the bolt ons but still has stock internals. If this is not safe what is the limit for this car?