or buy one of the repo busa's like a stolen or layed down insurance claim should be able to get one for right around 4 grand...
there was a busa for sale last week for 4500 ...1999 complete stock...just high miles...it was some olders guys frikkin dd. but he had receipts for everything. new forks..oem rebuilt (under 5k miles), wheels ,brakes, paint.... ill see if i can find it again.