be very carefull of the ebay universal on size fits none kits for your neon. dont forget about fuel managment, bigger injectors 255 pump and set up a boost ref. reg. if it is very low boost you might get away with a fmu. there is no tuning for the factory ecu on the neons so you will have to have some sort of piggy back or controller. hahn makes a port fueler, it adds extra injectors and a seprate ecu to run them but there is no timing control.. and you could always megasquirt it and have a full stand alone..
pm me if you want ot know more i have built a 425whp 1st gen non-srt4 neon and could help you