Are these good heads?

[72kool]

I've been doing some research lately for my engine, and came across these heads
http://vi.raptor.ebaydesc.com/ws/eBa...=1520282705000

Anybody have experience with this brand?
Are they good numbers for a 400hp engine?

I'll explain my plans a bit.

Original plan was to do a vortec head swap and new cam and try to get around 350 hp

It's going in a 1972 C20 with a th350 trans for now. My goal is a fun daily driver that's faster than it should be. One thing about the heads above I like is they have bigger valves than the vortec and they have more lift for a bigger can selection and I don't need a special intake. I have vortec heads now but just basic machine work will cost 300 not to mention if I want more lift than stock. Please give me your opinions. I know everybody has one 😉