v8 install

[mr48chev]

Stick, automatic or ?

The big roadblock will and always has been the steering box being right where the left hand exhaust manifold sits and that there isn't a manifold or header that will clear the steering if the engine is centered in the chassis and the steering box is left in it's stock position.

The old and standard method would be to weld a piece of heavy wall 1-1/2 inch angle iron to the frame and slide the steering box out and inch and a half to the outside to clear the manifold. That creates a few problems besides being crude.
1. the steering wheel sits slightly cockeyed unless you move the whole column over to the left that inch an a half. 2. you have to modify the hole in the firewall and if you moved the wheel over you would have to modify the mount under the dash.

I've wanted to figure out a cross steer setup for years that would let you put the engine in the frame centered and not have steering box interference

[mechanixman]

I know Truck Shop
http://www.truckandcarshop.com/

has a cross member, that already has the engine mounts for a SBC, and just welds to the frame.
If you look on their catalog, it's on page 70.
I'm sure other places have it too. But at $46, it'll save you a few headaches, not having to fab your own motor mounts.

Hope that helps.