Very cool! I used the RDMTEK kit which does the same thing - pull in the bottom, rather than push out the top. I just need a bit more toe correction to get in spec. I'd love to see photos of your custom bushings, are they based on the factory rubber bushings, or completely different?
The LSD should get your right rear tire under control, assuming there is adequate grip. We sometimes have trouble even with a "slow" 2.3 sixty foot due to track conditions... if they don't spray enough VHT on the starting line, or if the track temp is excessively hot or cold, etc you can still get some spinning problems. The Quaife will definitely help though. Since you're making so much power, drag radials might be needed at some point, but I wouldn't go there until you have to. I assume you're dropping the rear tire pressure into the low 20's, btw?
