350 sb issues

[gmebey]

My project truck is working me over...again

Now I'm having engine performance issue which arrears to be a combination of timing and intake.

I have a stock intake with a Edelbrock 1902 carb.

When I pulled the plugs I got a mix of rich and lean results. This doesn't surprise me since my intake is stock.

So what are my options?
Replace the intake or can I correct the issue another way?

Replacing the intake leads to another question.
What is a good affordable intake for general driving?

The second issue I'm having is the distributor is worn out. Any suggestions for a replacement?