They come in 3 sizes.

# AS1021 26.75" 6.20" 3.50" 350hp 2.50"
# AS1025 31.50" 8.00" 3.50" 600hp 2.75"
# AS1026 31.50" 10.30" 3.50" 750hp 2.75"

I'm guessing you would want the 600hp model. It has 2.75" inlet/outlets on it. The core is about $475 but I could probably get it for you cheaper drop shipped.