You can use the stock rods for that hp. Also you only need forged pistons of you're going to be revving high. I've seen 350hp with the stock pistons, but at 5500-6000 rpm. If you really want forged, Rosa makes some really good ones, and I believe ITM is what a lot of people use.
You're gonna need a lot of boost also so go with a good ems. If you don't feel comfortable tuning yourself go talk to a tuning shop an ask what they recommend. If you want to tune yourself go with megasquirt.