Why not fix the TBI? It's WAY better than carb. If it's a modified engine, well yeah TBI becomes a nightmare. But yeah, you can convert. If you don't replace the fuel pump with a low pressure unit, you'll need a pressure regulator to bring pressure down to manageable levels, an intake manifold (or an adapter) and carburetor. You'l have to adapt the fuel line to the carburetor (TIP: Use hi pressure fuel injection hose and double clamp all connections) If you don't have a fuel/water separator now is a good time to install one. I have heard different things about the return line, one is to just tee it in and excess fuel will just return to tank negating the need for a pressure regulator. I disagree. I think it's possible to dump too much fuel this way. Your ignition timing is also computer controlled so you should replace the distributor with a Prestolite unit or comparable. Some guys don't but I personally want that control over ignition timing. Not that I'm OCD or anything, I'm far from it. I don't care if my wrenches have fingerprint smudges on them while they are hung up in perfect order with perfect spacing between them.
