what size carb ?
how about this one. ebay $170
That would be a fine choice.
Look around because I am sure there are others for way cheaper on ebay.
I paid 140 for mine. They work on a magnum or an older la engine and the holes you dont use can be plugged with plugs that come with it.
for the money, you can't beat it and it's practically the same thing as the edelbrock it copies, only it's cheaper. Nothing wrong with it at all.
Again, search for more of them. I am sure you can pay less. Every bit you can save on that can go toward something else. A little here and a little there can save you bigtime in the total cost of what you plan to do.