Just got the latest edition of HotRod magazine revealing Edelbrock's entry into building a Holley clone of the 4150. Supposed to be a 650, 750, or 850 cfm variations. They did some changes like making the base plate integral, and some metering block changes. Otherwise it looks much like a typical Holley. No mention of pricing, but it will have some parts that wont interchange with a Holley 4150.
Edelbrock’s® VRS-4150 line of race and performance carburetors are packed with features that will appeal to racers, engine builders and carb tuners, as well as the hot street enthusiast looking to improve performance.