[Turbo99GT]

The reason I brought up the turbo is because on the 4.6, it makes a ton of power. I had a V2 S-trim and both @ 12 psi wouldn't be a race. I made more with less than 6 psi than any centrifugal blower would have made at 8 psi & some @ 12 psi. Full boost comes in at about 3,000 rpms sooner and the torque amount & curve is tons better. Sure a P-1SC was good for 800 hp, but you will be spinning the crap out of it and dealing with belt slip and it will have a short life.
The TDC kit is well thoughtout and is made with the best parts available. I haven't run into any of the problems mentioned above with the turbo system after 4 months and much track use.

I tossed my blower because everyone with a 4.6 has one and I wasn't getting anywhere fast. With the turbo system, I blew past all of my friends with blowers and stock engines. If you are dead set on getting a blower, I would get a D-1SC because you will have much more room to grow. I don't mind dealing with the any small problems that might occur because the benefits have been unreal. The car has been faster than most people would believe and is dead silent at idle and cruising.