Nitrous for a 95 GT

Hi. What would be a good nitrous system for a stock engine 95 mustang gt (5.0L). It would be good if it was 50-75 horsepower but my main concern is that it wouldnt damage the engine. This would just be used once in awhile to show off (wouldnt be used a lot). I was thinking of the zex airfilter nitrous system or this one (stage 1 system http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=4611&prmenbr=361 ). Thanks for any advice!

Look at a 75 shot safe, maybe even 100 but over that, you'll push it. Get an NX kit from Nitrous Dave.

I was also interested in that zex nitrous air amplifier kit. Link:
http://www.zex.com/information/products/nitrousairamplifier/
Does anybody know about this kit? I was wondering how much hp the kit adds. Also, would this be safe on a stock stang? Thanks in advance...