Many people say a 55 or 65 shot is fine, you can go higher but requires more tuning and precautions. If you have a return style fuel system (early 99 Cougars) I have my Zex Dry Nitrous Kit going back up for sale tonight, as the previous buyer promised, and promised to have the money then backed out. 
Check out the for sale section later tonight or pm me if your interested.
Check out the for sale section later tonight or pm me if your interested.
