I have a 292 with Edelbrock 357 tri-power manifold.  I have 3 Holley 94s that were rebuilt by Vintage Speed (Charlie Price).  He removed the idle circuits and the choke from the end carbs.  It runs fine on the center carb with the end carbs blocked.  I turned it over to a restoration shop who I asked to install the progressive linkage and get the end carbs functional.  Well, after 2 months and a $5000 bill they returned the car in the condition I gave it to them and they said it is impossible to get it to run right.  By the way, I don't know what they mean by "running right".

FYI I am handicapped and can do none of the work myself, but my son can change parts.  He is no carb expert.

Two questions:

1)  Anyone and expert on Holley/Stromburg carbs with some suggestions.

2)  Speedway Motors sell a replica set for $800.  Any opinions on how well these work.

P.S.  Don't tell me to just convert it to a modern 4bbl.  I had a Mummert manifold and Edelbrock 650 cfm 4bbl and it ran great.  I am old old old school and I insist on a tri-power set-up.  I sold the 4bbl and manifold.