Is the SC14 Adequate for my 2.5L/2.8L/3.0L/3.2L Motor?

Yes, I proved that in the calculations here, People are using more efficient however smaller Eatons on these cars, SC14 would be fine just as long as you keep it under 14,000 RPM, Meaning you are likely limited to 8 PSI at best with this setup if you want the supercharger not to wear out too fast. Then again, remember most motors stock are only good for up to 10-12 PSI without being rebuild.