^^ I have close to 10k invested in my supra and it is still not running. I have had to purchase several things twice given a shoddy first install. At any rate, do the work yourself and plan for extra money needed.Its a lot more expensive in the end then it is on paper.
And I agree, go with the 3" catback Raptor exhaust. My suspension setup is in my build thread. Wish you the very best of luck!