Rajay Turbo?

good question Bill.

The setups that "I KNOW OF" for 440's and such are Motorhome Turbo Kits.

Motorhomes are heavy, and get horrible gas mileage...turbos increase torque and improve passing power and therefore increase mileage.

The setups I have seen do in fact have turbo flanges on BB manifolds.

I personally would not put a value on a setup like that. A custom system is much better.