[G.R.]

If you are going TWM FI remember the cost of the set-up is just for the carbs and manifold...you'll need to supply the proper fi computer module as well as making sure your fuel supply lines, filter, pumps, return fuel lines(you do have one ,right?) are up to snuff...figure adding another another (ballbark figure)$500-1,000 for computer and parts and pieces(IE:linkage) you may need...the higher amount being if your car is already built and you have to do modifications to your fuel supply lines.
Any FI system is usually great once set up for me the cost was a way bit out of my price range.