I was planning to buy the plug and play Nitrous Express kit for my 2005 Silverado 5.3, until my friend told me that I needed to do some research before I put it on my truck. My truck is a stock 5.3, it does not have any forged internals or anything. The plug and play kit says that v8 can use up to a 150hp shot. I was wondering if anyone has used this kit and what they would recommend.