360 mopar trade for 350 chebby ?

Does the 350 have to be assembled? I got a set of good ready to bolt on 305 Vortec heads and a NICE Offenhauser dual port intake for a small chebbie. I think I got a friend with a block crank and rods. I know it ain't as complete as what you got, but the heads are ready to go and the intake is real nice. ..... just tryin to start somewhere.