Center bolt valve cover heads?

[Zonaman]

Let me see if I've got this straight. If you're going to bolt a Chevy TBI intake manifold to your engine (crate 350) you need "center bolt valve cover" type heads. My valve covers bolt on the side. Therefore I can't just find a stock, small block tbi set up and just bolt the manifold to my engine? If yes, what are the ways around this problem?

Thanks.