You're spending a lot of money for those gains. You should just sell the 'boat' and buy an '03-'04 Cobra...simple pulley swap, one range diff. plugs, t-stat, and a tune you should be really close to 500 rwhp. Then if you wanna get stupid, upgrade to some level 5 half shafts in the IRS and drop on the KB with a new tune and you'll be over 600 easily. Bottom line...it's stupid easy to get power from a Cobra. Now back to your regularly scheduled political banter.