I'd personally GT2530 with .86 A/R. I'd just get the turbos which should run around 2400 or so. I believe Zedparts used to be able to get them, George at boost sollutions probably can too. Then get some pentroofs for 2200, and you'll have to get some GD downpipes too. For around 6k you can have a killer turbo set up thats good for around 600 horses.