Unfortunately, I do not have the size chart or a set of Integra rotors to measure. Check the Brembo, etc. websites. There are several forums that have people well versed in this as well. I understand your intent with the project. As to stopping an LS-the stock rotors and Performance Friction or similar race pads will do the job for the front. The rear brakes do about 20% of the total braking, if that. Great choice on a MC and booster-it does improve things a lot.
Have fun with the project