Fuel rails really dont matter, stock oem fuel rails can support well over 200 hp, so its all about the ecu and tuning. If you going N/A then its a lot more money and time to make the slightest amount of HP.

I definetly agree to boost it!!! I would get a dsm t25, and build you a kit. It would cost around 800 dollars, You should also consider converting to OBD1, and use a p28 ecu that way you will be able to tune your ecu next to nothign!