350 GM Crate Motor questions for a 66 C10

[msg]

With the lift arm at the 1 ton mark I got it in but the chains at the front were going to bind up on the firewall. I guess with the intake manifold on I could have bolted somewhere further back where the chains would clear. I removed the mounting braces from the frame and bolted them up to the engine mount and then placed it down as far in as possible but it was a few inches away from lining up.