Sounds like a good plan of attack as far as the mods go, but i think your guesstiamte is a little high...StreetThisMX6 has the fastest all motor KL03 around and here is the list of his mods...
Performace Mods
- Hotshot Cold Air Intake w/ Elbow
- 65mm Throttle Body
- STT Ported/Polished/Knife-Edged ZE Intake Manifold
- Port Matched ZE Phenolic Spacers
- ZE Cams (Intake and Exhaust)
- Pacesetter Headers w/ No EGR
- Jeff Jeske 2.5” Testpipe
- 2.5” Crush Bent Exhaust Piping (No Resonators)
- Magnaflow Race Series Muffler w/ 2.25” Inlet and 4” Single Tip
- UR Under Drive Pulley
- Fidanza 9lb Flywheel
- SPEC Stage 3 – 6 Puck Ceramic Racing Clutch
- RR-Racing Polyurethane Front Motor Mount Insert
- STT Rear Polyurethane Motor Mount
- Sparkco 9mm Race Spark Plug Wires
- NGK V-Groove Spark Plugs Gapped @ .045”
- Finish Line Tuning ZE VRIS Point Chip
- Corksport Stainless Steel Clutch Line
Suspension & Rims/Tires
- Spring Lowering Springs (2.5” Front/1.8” Rear)
- KYB GR2 Struts
- KYB Strut Mounts
- Front/Rear Strut Tower Bars
- STT B-Pillar Bar Strut Brace
- 1” H & R Hubcentric Wheel Spacers
- WELD 15 x 8 Lightweight Racing Rims (Front & Race Only)
- 22 x 8 x 15 Mickey Thompson ET Slicks @ 10 psi
- Dunlop 205/55/15 Tires @ 53 psi (Rear)
- Stock 15 x 6.5” MX6 Rims (Gunmetal w/ Polished Lip)
Interior Mods
- B & M Short Throw Shifter
- Sparco Black Leather Shift Knob
- Lowtek 3 Pod Gauge Pillar
- Autometer Phantom Series 2-1/16” Oil Pressure Gauge
- Autometer Phantom Series 2-1/16” Water Temp Gauge
- Autometer Phantom Series 2-1/16” Air/Fuel Gauge
- Autometer Phantom Series 2-1/16” Voltage Meter Gauge
- MSD Shift Light
- 6 Color Indiglow Gauges
- 6 x 8 Pioneer 3-Way Speakers (Front)
- Summit Racing Battery Relocation Kit
Exterior & Lighting Mods
- Front/Rear ProCarParts.com Clear Sidemarkers
- M-Edition Taillights
- Matrix 80/100 Watt 9004 Hyper White Headlight Bulbs
- Matrix Hyper White Bulbs
He is only getting 185.1 whp - 169.1 wft/lbs (213 hp – 194 ft/lbs @ the crank)
For more info see this thread
http://www.mx6.com/forums/showthread.php?s=&threadid=74697
Hope this helps
-Bryce