It is a 2 piece valve. Your magnet won't stick to the head but it will stick to the stem. The valve is welded together about halfway up the stem. It has an Inconel head and stem half way up. This is the reason they are not recommended for a supercharged engine as they tend to fail.
Eddie

Blown, you got a chiller?

all inconel valves are 2 piece,[that i know of] if they made the whole valve out of that material they would be to heavy, they spin the stem to ultra high rpm's and friction weld it to the head

That's not true.

No I don't.

I am running the 1075-1 its a thicker gasket, around 50 something. Ive had good luck with them:D

I have a chiller and intake for that blower if you interested.

I would love to put a chiller on it. Unfortunately, my wife would kill me if I put a blower scoop on her sun pad!!!LOL What kind of chiller/intake do you have?

Superchiller and standard 256 intake manifold.