A couple questions about supercharging a 440

If you have the money to spend on heads, valve train, and all that then go for. But one of the nice things about a blower is that they'll make up for deficiencies in other areas. You WILL see very noticeable gains in HP and torque with stock heads. It might not be ideal but it will work. Worse case you build pressure in the manifold you can't use because the heads are the bottleneck. But unless you're racing and you need all the trick parts to make every 10th count, I think you'll still make more power than you can realistically put to use on the street. The fact is, you don't make boost until you wind it up with the throttle wide open, under load. Most of the time you're not doing that. Still, at idle and cruise, it is forcing a charge into the cylinders and will very responsive.

If you want it to live you just need to control detonation. Forged pistons, good pump gas, and sane boost levels (watch your dynamic compression ratio) are where to start, IMO.