Stopping the knock: Lower compression and ported heads...

Update:

I'm still running the same Lunati cam but I have a MP 528 on my shelf ready to go in. I also bought another set of the Johnson EDM lifters and a Cloyes 3 bolt timing set.
I pulled the loose converter and sold it. Lenny at Ultimate Converter Concepts built a nice 11" converter that really transformed the car. I pulled the Gear Vendors and sold it to a guy in Tennessee. I had a new 3.55 ring and pinion installed in another 3rd member along with new clutches in the SG diff.
My motivation for the 528 cam swap is to obtain better low speed performance as compared to this Lunati cam. At WOT the car still runs like a raped ape but it idles rougher than I want and feels a bit soggy below 2000 rpms.

The converter was a great move, it puts things in perspective. Stock stuff modifed intelligently, smokes overboard purchases with no thought. I'm glad , you are finding a balance.( you don't do this often, it's a learning curve)...