OK, here's the deal.  I am no genieus at engine building/installation and here is what I have gone and done.  I have a '64 Chevt II which still possessed its original 283 when I got it.  I di all that stuff you do to an old tired motor and it was quite a firecracker.  It swallowed a bone a few weeks ago and broke a rod and a piston.  Instead of moaning I saw this as an opportunity.  I dissassembled the car from the firewall forward.  I have purchased a bolt on re-build of the front chassis which will give me discs, coil-overs and power steering, not to mention all the right mounting hardware for the RAT I am about to sink in the car's loins.  The engine is a late 90's 454 which is injected.  I know the salvage yard owner who sold it to me and he is aas good as they come.  I ask him how hard it would be to switch back to a carb and he said to just buy a carb manifold that would fit the engine, stick on the right carb and go.  Is this correct?  I realize there are a lot of logistics to deal with but bascially is this the program to follow?

Thanks

FDeuce  

Yep.  Is the engine you have one of the later Vortec 454's or is it the cathedral port (like LS1) style intake runners?