with a 2k budget you can get more power with a gsr one of the set ups that i have is:

buddy club spec IV Cams $570 from www.kingmotorsports.com
Buddy club Titanium retainers $205 from www.kingmotorsports.com
Buddy club Valve Springs $210 from www.kingmotorsports.com
Spoon JDM Type R Balanced pistons with rings and Wrist pins for $360 from
www.Inlinefour.com
buddyclub Cam gears for $180(exhaust and intake) from www.inlinefour.com
and hondata or some other ecu program. you will need to move the redline to about 9500 rpm and tune!

so your looking at about $1525. in parts not including ecu stuff and tuning
i do know that at www.skunk2.com their ecu tuning package is about $250.