Up-coming conversion from 318/A904 to 360/A904

Good Morning, E-Body Members:
I was wondering about several up-coming events during this conversion:
1. Want to install aluminum Heads: Which head mfg. provides the best a 360LA?
1a. Another cost-saving idea: I also have 73 340 heads that are in great shape at machine shop. Would they work on the 360?
2. How many components can swap over during this conversion?

Thank you very much for your feedback
Author: SRKlegin