[mlambrecht82]

A forged short block is basically the engine block you have now except it hase forged pistons, rods, and possible a crank. Buying this from a place such as Sean Hyland motorsports would prove supperior clearances and engine building compared to the Ford assembly line. It's going to cost you. I belive the short block alone will cost you around $2500 when you add labor, gaskets and new studs your looking to spend a lot. I don't think that this is neccisary for a 2000 GT running 100 shot or less. Believe it or not the hyperutectic pistons have been proven to be just as good as the forged when used with nitrous. (whether I believe that 100% or not is a different story.) The hyperutectics are cast aluminum pistons with a high silica count. Which resists the heat caused by applying nitrous.
The best thing you can do to get your car ready for nitrous would be to upgrade your fuel system. The largest reason for failure with nitrous is not getting the fuel required by the upgraded horse power. The problem here is that your car uses a returnless fuel system like mine. And there are only two high performance pumps that are compatabile. Steeda has both of them. Give them a call and ask them if you should upgrade your fuel system for the amount of nitrous you will be using. I recomend sending your stock fuel module in for steeda to modify it and put twin pumps in. I think that it is $399 for that set up, and $349 to buy the '03 twin cobra setup. The problem is that with the cobra set up your will have to break out the existing baffle because the new pumps are too big to fit in side. While your beaking out this baffle your snips will slip and you will bang your wrist on the opening in the gas tank which will slice you too the bone and require you to get 11 stiches and then you will have a nasty scar. Another problem is that you will have to keep your tank pretty full otherweis your fuel will slosh away from the pump and cause it to suck air, and the fuel helps cool the pump, and without the fuel surrounding the pump it will greatly shorten the life of the pump.
In conclusion, if you run less than 100 shot you should be fine with out the fuel upgrade, but if you can't resist the need for speed, you should probably upgrade the fuel system to play it safe. Ask the nitrous company about upgrading the injectors too, and always try to get a second opinion, because a lot of people in this world are here simply to sell things, I used to be a salesmen, and I could sell PT Cruisers to anybody, even if they didn't want one.
I hope that my long responses don't bother anyone here. If they do, let me know and I will attempt to shrink them down.