I will be installing a zex nitorous kit this weekend on my d15 all I have is I/H/E I only want to spend about $300 more I want to gt something to help increase the fuel what should I get....I am doing a swap this winter that is why I want to keep a budget on this engine....I will spend more money on things that can be carried over to the swap but can't see spending to much $$$ on stuff I won't be using after this winter.

what should I get injectors??? fule pump??? chip????