Looking for advice an open rocker 30.

1. I don't have the intake manifold.
Finding a intake manifold for this motor is probably a needle in a haystack. Is there a currently made manifold with a matching diameter that can be modded to fit, or I could just make one.

2. Not sure if this motor was even run! Would like some run in advice.

Engine has good compression, excellent condition.
No shelf queen- this baby is headed to replace the 30s in my Junior 60.

The OR is my 4th Saito. 2 more 30s, 1 in the Jr. 60, and 1 56 in a Sig Rascal 40.