How much would it run to add VTEC to my engine...how much HP am I looking at adding and is it healthy to do that with the stock internal parts left alone...or will I need to upgrade a lot?

 

just to add a vtec head will cost you about 500 yes it is safe to do this to a stock motor but not safe to rev past factory redline (7000) if you do not know what you are doing do not attempt this upgrade by yourself