Hangtowner can you please explain a little bit more about the hairpin clips you referenced. I'm very interested to have a close look. Maybe a picture or link would be great.

BTW I was looking at the new Edelbrock AVS2 last Summer at the Muscle Machines car show in Minnesota. The Edelbrock representative was explaining some of the finer improvements in flow, metering etc....
That is something I will try once I drop the 383 back in my 70 Challenger.
If and when you try the AVS2 please provide feedback.