[eschaider]

You will be in the bag for somewhere between $800 to about $1,000 depending on what you choose to buy from them. At that point you will have a very nice custom carb that is adjustable in terms of air fuel delivery, possibly even as good as you can get with a carburetor. You still need to get the engine dyno tuned and properly match your new carb's fuel delivery capabilities to your engine's fuel appetite. That is about $1,000 of dyno time in round numbers. More if the shop is short on carb talent.

One of the really depressing things you will discover is the best tuned carburetor can only approximate the engine's fueling demands across a wide rpm range like you would drive in on a daily basis. An entry level EFI system can substantially improve on that level of fueling performance. As the years go by there are fewer and fewer people who are capable of doing an excellent tune using a carburetor. Two years, five years from today there will be even less.

I would encourage you to step back from the carbureted solution and embrace an EFI solution. The fuel control is unmatched by any carburetor. The driveability is equally impressive and the number of systems with adequate support for you to do 99% if not the entire job yourself is rapidly expanding. We are well past the point in time that a transition is a good idea.