agreed, with 10 grand your best bang for your buck would be to build up the shortblock($2,000) and get the hp twin turbo kit or hellion single turbo kit($6,000).
600 whp would be an easy task with that setup and you would loose weight with the tubular k-member. and with turbos you get more mid-range torque than a centrifical supercharger.

 

Forged shortblock + Mongoose Kit.

End of story.