The only thing I would add to FREAKAH's list would be Rocket City captured ball ends especially in the rear.
A Drake version RE Manifold is around $15.
You can get excellent results using an OS CV-R which is a side exhaust. Pick up the AE carb restrictors and you're set for almost any track.
Don't forget getting some shock springs and oil to set up for the track.
Pink Taper pins and firm inserts for high traction tracks with red directionals stock foam in front.
On loose tracks ????? check with the local fast drivers to see what they're using even if they drive a GT or MST.