I agree with PRH. Need to know exactly what they have first. Then, we need to what you have, or what you want to do.
Don't let the rocker arm/shaft deal bother you. There are rockers out there. FABO member Rocket has really, REALLY nice shafts. I'd rather have the ductile iron rockers than anything Harland Sharp, but that's just me. The only real fault with the ductile rockers is they only come in 1.5 ratio. Other than that, bitchin' rockers.
You'll also need stands with offset holes. The shafts need offset holes as well.
Every engine needs pushrods so who cares?
There are intakes out there. I'll be seeking a used one this weekend at a swap meet. There around and relatively inexpensive.
I'm not a fan of the closed chambered heads. If you can get a piston builder to make the piston correctly for the open chambered head (I'll be trying that later this year so we will see how that goes...most of them have GM on the brain and you have to holler to get them to understand what you want, even before you send a drawing or fill out their form) then I like the OC head.
Find out the details and then you can make a better choice.
